Home / 80,766.72-121,201.92-39,191.04

Finding the Fourth Proportional to 80,766.72, 121,201.92 and 39,191.04

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Solution

The fourth proportional to 80,766.72, 121,201.92 and 39,191.04 is: 58,811.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.72 : 121,201.92 = 39,191.04 : x
  2. Step 2: Convert to fraction form
    80,766.72/121,201.92 = 39,191.04/x
  3. Step 3: Cross multiply
    80,766.72x = 121,201.92 × 39,191.04
  4. Step 4: Simplify right side
    80,766.72x = 4,750,029,294.80
  5. Step 5: Solve for x
    x = 4,750,029,294.80/80,766.72
  6. Step 6: Final answer
    x = 58,811.71

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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.