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Finding the Fourth Proportional to 87,577.92, 131,366.76 and 28,419.48

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Solution

The fourth proportional to 87,577.92, 131,366.76 and 28,419.48 is: 42,629.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,577.92 : 131,366.76 = 28,419.48 : x
  2. Step 2: Convert to fraction form
    87,577.92/131,366.76 = 28,419.48/x
  3. Step 3: Cross multiply
    87,577.92x = 131,366.76 × 28,419.48
  4. Step 4: Simplify right side
    87,577.92x = 3,733,375,008.48
  5. Step 5: Solve for x
    x = 3,733,375,008.48/87,577.92
  6. Step 6: Final answer
    x = 42,629.18

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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.