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Finding the Fourth Proportional to 87,372.52, 131,058.76 and 21,708.52

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Solution

The fourth proportional to 87,372.52, 131,058.76 and 21,708.52 is: 32,562.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,372.52 : 131,058.76 = 21,708.52 : x
  2. Step 2: Convert to fraction form
    87,372.52/131,058.76 = 21,708.52/x
  3. Step 3: Cross multiply
    87,372.52x = 131,058.76 × 21,708.52
  4. Step 4: Simplify right side
    87,372.52x = 2,845,091,712.64
  5. Step 5: Solve for x
    x = 2,845,091,712.64/87,372.52
  6. Step 6: Final answer
    x = 32,562.78

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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.