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Finding the Fourth Proportional to 87,595.92, 131,414.80 and 28,431.76

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Solution

The fourth proportional to 87,595.92, 131,414.80 and 28,431.76 is: 42,654.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,595.92 : 131,414.80 = 28,431.76 : x
  2. Step 2: Convert to fraction form
    87,595.92/131,414.80 = 28,431.76/x
  3. Step 3: Cross multiply
    87,595.92x = 131,414.80 × 28,431.76
  4. Step 4: Simplify right side
    87,595.92x = 3,736,354,054.05
  5. Step 5: Solve for x
    x = 3,736,354,054.05/87,595.92
  6. Step 6: Final answer
    x = 42,654.43

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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.