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Finding the Fourth Proportional to 87,572.61, 131,401.71 and 54,283.77

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Solution

The fourth proportional to 87,572.61, 131,401.71 and 54,283.77 is: 81,452.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,572.61 : 131,401.71 = 54,283.77 : x
  2. Step 2: Convert to fraction form
    87,572.61/131,401.71 = 54,283.77/x
  3. Step 3: Cross multiply
    87,572.61x = 131,401.71 × 54,283.77
  4. Step 4: Simplify right side
    87,572.61x = 7,132,980,203.25
  5. Step 5: Solve for x
    x = 7,132,980,203.25/87,572.61
  6. Step 6: Final answer
    x = 81,452.18

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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.