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Finding the Fourth Proportional to 71,388.87, 98,504.13 and 40,747.97

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Solution

The fourth proportional to 71,388.87, 98,504.13 and 40,747.97 is: 56,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388.87 : 98,504.13 = 40,747.97 : x
  2. Step 2: Convert to fraction form
    71,388.87/98,504.13 = 40,747.97/x
  3. Step 3: Cross multiply
    71,388.87x = 98,504.13 × 40,747.97
  4. Step 4: Simplify right side
    71,388.87x = 4,013,842,841.60
  5. Step 5: Solve for x
    x = 4,013,842,841.60/71,388.87
  6. Step 6: Final answer
    x = 56,225.05

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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.