Home / 80,352.56-120,517.21-56,263.78

Finding the Fourth Proportional to 80,352.56, 120,517.21 and 56,263.78

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Solution

The fourth proportional to 80,352.56, 120,517.21 and 56,263.78 is: 84,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,352.56 : 120,517.21 = 56,263.78 : x
  2. Step 2: Convert to fraction form
    80,352.56/120,517.21 = 56,263.78/x
  3. Step 3: Cross multiply
    80,352.56x = 120,517.21 × 56,263.78
  4. Step 4: Simplify right side
    80,352.56x = 6,780,753,789.65
  5. Step 5: Solve for x
    x = 6,780,753,789.65/80,352.56
  6. Step 6: Final answer
    x = 84,387.53

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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.