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Finding the Fourth Proportional to 92,472.28, 138,695.64 and 39,874.92

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Solution

The fourth proportional to 92,472.28, 138,695.64 and 39,874.92 is: 59,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,472.28 : 138,695.64 = 39,874.92 : x
  2. Step 2: Convert to fraction form
    92,472.28/138,695.64 = 39,874.92/x
  3. Step 3: Cross multiply
    92,472.28x = 138,695.64 × 39,874.92
  4. Step 4: Simplify right side
    92,472.28x = 5,530,477,549.35
  5. Step 5: Solve for x
    x = 5,530,477,549.35/92,472.28
  6. Step 6: Final answer
    x = 59,806.87

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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.