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Finding the Fourth Proportional to 71,242.62, 98,317.71 and 39,410.97

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Solution

The fourth proportional to 71,242.62, 98,317.71 and 39,410.97 is: 54,388.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,242.62 : 98,317.71 = 39,410.97 : x
  2. Step 2: Convert to fraction form
    71,242.62/98,317.71 = 39,410.97/x
  3. Step 3: Cross multiply
    71,242.62x = 98,317.71 × 39,410.97
  4. Step 4: Simplify right side
    71,242.62x = 3,874,796,319.28
  5. Step 5: Solve for x
    x = 3,874,796,319.28/71,242.62
  6. Step 6: Final answer
    x = 54,388.74

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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.