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Finding the Fourth Proportional to 71,474.75, 98,632.63 and 39,646.61

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Solution

The fourth proportional to 71,474.75, 98,632.63 and 39,646.61 is: 54,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,474.75 : 98,632.63 = 39,646.61 : x
  2. Step 2: Convert to fraction form
    71,474.75/98,632.63 = 39,646.61/x
  3. Step 3: Cross multiply
    71,474.75x = 98,632.63 × 39,646.61
  4. Step 4: Simplify right side
    71,474.75x = 3,910,449,414.88
  5. Step 5: Solve for x
    x = 3,910,449,414.88/71,474.75
  6. Step 6: Final answer
    x = 54,710.92

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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.