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Finding the Fourth Proportional to 71,585.40, 98,787.96 and 39,753.48

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Solution

The fourth proportional to 71,585.40, 98,787.96 and 39,753.48 is: 54,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.40 : 98,787.96 = 39,753.48 : x
  2. Step 2: Convert to fraction form
    71,585.40/98,787.96 = 39,753.48/x
  3. Step 3: Cross multiply
    71,585.40x = 98,787.96 × 39,753.48
  4. Step 4: Simplify right side
    71,585.40x = 3,927,165,192.10
  5. Step 5: Solve for x
    x = 3,927,165,192.10/71,585.40
  6. Step 6: Final answer
    x = 54,859.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.