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Finding the Fourth Proportional to 45,937.62, 68,847.69 and 39,990.21

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Solution

The fourth proportional to 45,937.62, 68,847.69 and 39,990.21 is: 59,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,937.62 : 68,847.69 = 39,990.21 : x
  2. Step 2: Convert to fraction form
    45,937.62/68,847.69 = 39,990.21/x
  3. Step 3: Cross multiply
    45,937.62x = 68,847.69 × 39,990.21
  4. Step 4: Simplify right side
    45,937.62x = 2,753,233,581.11
  5. Step 5: Solve for x
    x = 2,753,233,581.11/45,937.62
  6. Step 6: Final answer
    x = 59,934.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.