Question

The mean of fourth numbers is 71.5 if the tree of the numbers ar 58,76and88 what si the value of the fourth number?

Answer 1

Answer:

Let’s replace the pair of opposite outliers with their mean:

58+76+88+x=4×71.5

73+76+73+x=4×71.5

Now take 70 as the reference value

3+6+3+y=6

y=−6

And so:

x=64

Answer 2

The value of fourth number is 64

Question :-

The mean of four numbers is 71.5 . If three of the numbers are 58 , 76 and 88 what is the value of fourth number ?

Given :-

The mean value of four numbers = 71.5

Three of the numbers = 58 , 76 , 88

To Find :-

The value of fourth number ?

Formula Applied :

$mean \: vaule = \frac{sum \: of \: values}{number \: oof \: values}$

Solution :-

Let's have the fourth number as x

As by the formula

$71.5 = \frac{58 + 76 + 88 + x}{4}$

$71.5 = \frac{222 + x}{4} \\ 71.5 \times 4 = 222 + x \\ 286 = 222 + x \\ x = 286 - 222$

$x = 64$