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Finding the Fourth Proportional to 73,177.75, 109,766.72 and 20,587.29

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Solution

The fourth proportional to 73,177.75, 109,766.72 and 20,587.29 is: 30,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,177.75 : 109,766.72 = 20,587.29 : x
  2. Step 2: Convert to fraction form
    73,177.75/109,766.72 = 20,587.29/x
  3. Step 3: Cross multiply
    73,177.75x = 109,766.72 × 20,587.29
  4. Step 4: Simplify right side
    73,177.75x = 2,259,799,296.99
  5. Step 5: Solve for x
    x = 2,259,799,296.99/73,177.75
  6. Step 6: Final answer
    x = 30,880.96

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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.