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Finding the Fourth Proportional to 91,885.11, 137,744.45 and 63,818.42

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Solution

The fourth proportional to 91,885.11, 137,744.45 and 63,818.42 is: 95,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,885.11 : 137,744.45 = 63,818.42 : x
  2. Step 2: Convert to fraction form
    91,885.11/137,744.45 = 63,818.42/x
  3. Step 3: Cross multiply
    91,885.11x = 137,744.45 × 63,818.42
  4. Step 4: Simplify right side
    91,885.11x = 8,790,632,154.95
  5. Step 5: Solve for x
    x = 8,790,632,154.95/91,885.11
  6. Step 6: Final answer
    x = 95,669.82

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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.