Question

Find the value of x in 63:x::81:36

Answer 1

$63 \times 36 = x \times 81 \\ so \: \\ x = (63 \times 36) \div 81 \\ \\ x = 28$

Answer 2

81:36=9:4 and this is equal to 63:x
so 63:x=9:4 so on calculating this we get
x is equal to 28.