Question

The average of 4number is 48 three of the numbers are 48,54,and56 find the fourth number​

Answer 1

Answer:

assume the fourth number to be x

x = 34

Step-by-step explanation:

answer is in the attachment

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Answer 2

Answer:

Fourth number is $34$.

Step-by-step explanation:

To find : fourth number .

Given : The average of 4 number is 48 three of the numbers are 48, 54 , and 56 .

Solution :

• As per given data we know that the average of 4 number is 48 three of the numbers are 48, 54 , and 56 .
• Let , $x$ be the fourth number  .
• Average is the arithmetic mean.
• It is the ratio of sum of all the numbers given in data to the total number of observations.
• Formula:  $Average =\frac{\text { sum of all the observations }}{\text { total of observations }}$
• Here, sum of observations $= 48 + 54 +56 + x = 158 + x$
• Total number of observations $= 4$
• Average = $48$
• Substituting values in above formula to find the fourth number .  

         $48 = \frac{158 + x}{4} \\\\ 192 = 158 + x \\\\ x = 34$