If 36 : 81 :: X : 63, what is the value

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If 36 : 81 :: X : 63, what is the value of X?

Options:

Correct Answer:

Explanation:

In proportion: a : b :: c : d

⇒ Product of outer values = Product of inner values.

Therefore, a × d = b × c

Now, ATQ

⇒ 36 : 81 :: X : 63

⇒ 36 × 63 = 81 × X

⇒ X = \(\frac{36\; \times\; 63}{81}\) = 28