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Finding the Fourth Proportional to 84,753.90, 127,152.24 and 39,139.62

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Solution

The fourth proportional to 84,753.90, 127,152.24 and 39,139.62 is: 58,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,753.90 : 127,152.24 = 39,139.62 : x
  2. Step 2: Convert to fraction form
    84,753.90/127,152.24 = 39,139.62/x
  3. Step 3: Cross multiply
    84,753.90x = 127,152.24 × 39,139.62
  4. Step 4: Simplify right side
    84,753.90x = 4,976,690,355.75
  5. Step 5: Solve for x
    x = 4,976,690,355.75/84,753.90
  6. Step 6: Final answer
    x = 58,719.31

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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.