Home / 80,942.97-121,310.55-38,759.85

Finding the Fourth Proportional to 80,942.97, 121,310.55 and 38,759.85

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Solution

The fourth proportional to 80,942.97, 121,310.55 and 38,759.85 is: 58,090.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.97 : 121,310.55 = 38,759.85 : x
  2. Step 2: Convert to fraction form
    80,942.97/121,310.55 = 38,759.85/x
  3. Step 3: Cross multiply
    80,942.97x = 121,310.55 × 38,759.85
  4. Step 4: Simplify right side
    80,942.97x = 4,701,978,721.42
  5. Step 5: Solve for x
    x = 4,701,978,721.42/80,942.97
  6. Step 6: Final answer
    x = 58,090.02

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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.