Home / 80,764.29-121,171.14-28,178.28

Finding the Fourth Proportional to 80,764.29, 121,171.14 and 28,178.28

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Solution

The fourth proportional to 80,764.29, 121,171.14 and 28,178.28 is: 42,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,764.29 : 121,171.14 = 28,178.28 : x
  2. Step 2: Convert to fraction form
    80,764.29/121,171.14 = 28,178.28/x
  3. Step 3: Cross multiply
    80,764.29x = 121,171.14 × 28,178.28
  4. Step 4: Simplify right side
    80,764.29x = 3,414,394,310.84
  5. Step 5: Solve for x
    x = 3,414,394,310.84/80,764.29
  6. Step 6: Final answer
    x = 42,276.04

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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.