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Finding the Fourth Proportional to 91,481.00, 137,043.92 and 67,421.59

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Solution

The fourth proportional to 91,481.00, 137,043.92 and 67,421.59 is: 101,001.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,481.00 : 137,043.92 = 67,421.59 : x
  2. Step 2: Convert to fraction form
    91,481.00/137,043.92 = 67,421.59/x
  3. Step 3: Cross multiply
    91,481.00x = 137,043.92 × 67,421.59
  4. Step 4: Simplify right side
    91,481.00x = 9,239,718,812.18
  5. Step 5: Solve for x
    x = 9,239,718,812.18/91,481.00
  6. Step 6: Final answer
    x = 101,001.51

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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.