Home / 80,716.92-121,000.67-35,714.42

Finding the Fourth Proportional to 80,716.92, 121,000.67 and 35,714.42

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Solution

The fourth proportional to 80,716.92, 121,000.67 and 35,714.42 is: 53,538.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,716.92 : 121,000.67 = 35,714.42 : x
  2. Step 2: Convert to fraction form
    80,716.92/121,000.67 = 35,714.42/x
  3. Step 3: Cross multiply
    80,716.92x = 121,000.67 × 35,714.42
  4. Step 4: Simplify right side
    80,716.92x = 4,321,469,006.52
  5. Step 5: Solve for x
    x = 4,321,469,006.52/80,716.92
  6. Step 6: Final answer
    x = 53,538.58

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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.