Home / 80,766.24-121,149.42-38,636.38

Finding the Fourth Proportional to 80,766.24, 121,149.42 and 38,636.38

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Solution

The fourth proportional to 80,766.24, 121,149.42 and 38,636.38 is: 57,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.24 : 121,149.42 = 38,636.38 : x
  2. Step 2: Convert to fraction form
    80,766.24/121,149.42 = 38,636.38/x
  3. Step 3: Cross multiply
    80,766.24x = 121,149.42 × 38,636.38
  4. Step 4: Simplify right side
    80,766.24x = 4,680,775,027.90
  5. Step 5: Solve for x
    x = 4,680,775,027.90/80,766.24
  6. Step 6: Final answer
    x = 57,954.60

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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.