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Finding the Fourth Proportional to 87,224.55, 130,753.77 and 28,018.71

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Solution

The fourth proportional to 87,224.55, 130,753.77 and 28,018.71 is: 42,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,224.55 : 130,753.77 = 28,018.71 : x
  2. Step 2: Convert to fraction form
    87,224.55/130,753.77 = 28,018.71/x
  3. Step 3: Cross multiply
    87,224.55x = 130,753.77 × 28,018.71
  4. Step 4: Simplify right side
    87,224.55x = 3,663,551,963.04
  5. Step 5: Solve for x
    x = 3,663,551,963.04/87,224.55
  6. Step 6: Final answer
    x = 42,001.39

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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.