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Finding the Fourth Proportional to 80,463.43, 120,500.88 and 40,356.28

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Solution

The fourth proportional to 80,463.43, 120,500.88 and 40,356.28 is: 60,436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,463.43 : 120,500.88 = 40,356.28 : x
  2. Step 2: Convert to fraction form
    80,463.43/120,500.88 = 40,356.28/x
  3. Step 3: Cross multiply
    80,463.43x = 120,500.88 × 40,356.28
  4. Step 4: Simplify right side
    80,463.43x = 4,862,967,253.53
  5. Step 5: Solve for x
    x = 4,862,967,253.53/80,463.43
  6. Step 6: Final answer
    x = 60,436.99

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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.