Home / 80,775.38-121,218.46-28,184.87

Finding the Fourth Proportional to 80,775.38, 121,218.46 and 28,184.87

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Solution

The fourth proportional to 80,775.38, 121,218.46 and 28,184.87 is: 42,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,775.38 : 121,218.46 = 28,184.87 : x
  2. Step 2: Convert to fraction form
    80,775.38/121,218.46 = 28,184.87/x
  3. Step 3: Cross multiply
    80,775.38x = 121,218.46 × 28,184.87
  4. Step 4: Simplify right side
    80,775.38x = 3,416,526,769.28
  5. Step 5: Solve for x
    x = 3,416,526,769.28/80,775.38
  6. Step 6: Final answer
    x = 42,296.63

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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.