If 12, 24, 45 and y are in proportion, then the value of y is:

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RRB Technician Grade III Official Paper (Held On: 28 Dec, 2024 Shift 2)
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  1. 60
  2. 25
  3. 90
  4. 30

Answer (Detailed Solution Below)

Option 3 : 90
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Detailed Solution

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Given:

If 12, 24, 45 and y are in proportion, then the value of y is:

Formula used:

If a, b, c, d are in proportion, then a/b = c/d

Calculation:

12/24 = 45/y

⇒ 12 × y = 24 × 45

⇒ y = 1080/12

⇒ y = 90

∴ The correct answer is option (3).

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