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Finding the Fourth Proportional to 64,753.28, 89,372.82 and 40,863.92

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Solution

The fourth proportional to 64,753.28, 89,372.82 and 40,863.92 is: 56,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,753.28 : 89,372.82 = 40,863.92 : x
  2. Step 2: Convert to fraction form
    64,753.28/89,372.82 = 40,863.92/x
  3. Step 3: Cross multiply
    64,753.28x = 89,372.82 × 40,863.92
  4. Step 4: Simplify right side
    64,753.28x = 3,652,123,766.65
  5. Step 5: Solve for x
    x = 3,652,123,766.65/64,753.28
  6. Step 6: Final answer
    x = 56,400.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.