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Finding the Fourth Proportional to 87,073.92, 130,489.92 and 45,437.76

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Solution

The fourth proportional to 87,073.92, 130,489.92 and 45,437.76 is: 68,093.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,073.92 : 130,489.92 = 45,437.76 : x
  2. Step 2: Convert to fraction form
    87,073.92/130,489.92 = 45,437.76/x
  3. Step 3: Cross multiply
    87,073.92x = 130,489.92 × 45,437.76
  4. Step 4: Simplify right side
    87,073.92x = 5,929,169,667.38
  5. Step 5: Solve for x
    x = 5,929,169,667.38/87,073.92
  6. Step 6: Final answer
    x = 68,093.52

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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.