Home / 80,439.96-120,726.30-40,470.24

Finding the Fourth Proportional to 80,439.96, 120,726.30 and 40,470.24

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Solution

The fourth proportional to 80,439.96, 120,726.30 and 40,470.24 is: 60,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,439.96 : 120,726.30 = 40,470.24 : x
  2. Step 2: Convert to fraction form
    80,439.96/120,726.30 = 40,470.24/x
  3. Step 3: Cross multiply
    80,439.96x = 120,726.30 × 40,470.24
  4. Step 4: Simplify right side
    80,439.96x = 4,885,822,335.31
  5. Step 5: Solve for x
    x = 4,885,822,335.31/80,439.96
  6. Step 6: Final answer
    x = 60,738.75

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1.5x scale

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.