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Finding the Fourth Proportional to 84,129.01, 125,897.31 and 52,553.94

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Solution

The fourth proportional to 84,129.01, 125,897.31 and 52,553.94 is: 78,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,129.01 : 125,897.31 = 52,553.94 : x
  2. Step 2: Convert to fraction form
    84,129.01/125,897.31 = 52,553.94/x
  3. Step 3: Cross multiply
    84,129.01x = 125,897.31 × 52,553.94
  4. Step 4: Simplify right side
    84,129.01x = 6,616,399,675.90
  5. Step 5: Solve for x
    x = 6,616,399,675.90/84,129.01
  6. Step 6: Final answer
    x = 78,645.88

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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.