Home / 80,676.52-121,010.14-30,761.65

Finding the Fourth Proportional to 80,676.52, 121,010.14 and 30,761.65

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Solution

The fourth proportional to 80,676.52, 121,010.14 and 30,761.65 is: 46,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,676.52 : 121,010.14 = 30,761.65 : x
  2. Step 2: Convert to fraction form
    80,676.52/121,010.14 = 30,761.65/x
  3. Step 3: Cross multiply
    80,676.52x = 121,010.14 × 30,761.65
  4. Step 4: Simplify right side
    80,676.52x = 3,722,471,573.13
  5. Step 5: Solve for x
    x = 3,722,471,573.13/80,676.52
  6. Step 6: Final answer
    x = 46,140.71

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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.