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Finding the Fourth Proportional to 71,390.97, 98,517.06 and 39,562.83

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Solution

The fourth proportional to 71,390.97, 98,517.06 and 39,562.83 is: 54,595.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.97 : 98,517.06 = 39,562.83 : x
  2. Step 2: Convert to fraction form
    71,390.97/98,517.06 = 39,562.83/x
  3. Step 3: Cross multiply
    71,390.97x = 98,517.06 × 39,562.83
  4. Step 4: Simplify right side
    71,390.97x = 3,897,613,696.88
  5. Step 5: Solve for x
    x = 3,897,613,696.88/71,390.97
  6. Step 6: Final answer
    x = 54,595.33

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1.5x scale

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.