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Finding the Fourth Proportional to 71,569.65, 107,354.48 and 68,617.20

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Solution

The fourth proportional to 71,569.65, 107,354.48 and 68,617.20 is: 102,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569.65 : 107,354.48 = 68,617.20 : x
  2. Step 2: Convert to fraction form
    71,569.65/107,354.48 = 68,617.20/x
  3. Step 3: Cross multiply
    71,569.65x = 107,354.48 × 68,617.20
  4. Step 4: Simplify right side
    71,569.65x = 7,366,363,481.97
  5. Step 5: Solve for x
    x = 7,366,363,481.97/71,569.65
  6. Step 6: Final answer
    x = 102,925.80

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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.