Question

42:56::72:? is a mathematical sequence what will be the correct number

Answer 1

I think 88 will be answer

Answer 2

The missing number in the sequence 42 : 56 ::72 :?  is 96

Given:

Sequence is  42 : 56 :: 72 : x

To Find:  

The missing number in the sequence

Solution:

By ratio and proportion, a: b :: c: d

$\frac{a}{b}=\frac{c}{d}$ ,comparing this equation in ratio and proportion to that with the sequence given in question,

It becomes $\frac{42}{56}=\frac{72}{x}$,  

$\begin{array}{l}{\frac{3}{4}=\frac{72}{x}}\\ \\ {x=\frac{72 \times 4}{3}}\\ \\ {x=\frac{288}{3}=96}\end{array}$

The ratio becomes $\frac{42}{56}=\frac{72}{96}$,

The missing number in the sequence is 96 and the sequence becomes 42 : 56 ::72 : 96