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Finding the Fourth Proportional to 91,687.97, 137,503.96 and 63,406.73

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Solution

The fourth proportional to 91,687.97, 137,503.96 and 63,406.73 is: 95,090.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,687.97 : 137,503.96 = 63,406.73 : x
  2. Step 2: Convert to fraction form
    91,687.97/137,503.96 = 63,406.73/x
  3. Step 3: Cross multiply
    91,687.97x = 137,503.96 × 63,406.73
  4. Step 4: Simplify right side
    91,687.97x = 8,718,676,650.89
  5. Step 5: Solve for x
    x = 8,718,676,650.89/91,687.97
  6. Step 6: Final answer
    x = 95,090.73

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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.