Home / 80,454,910.65-120,682,365.98-72,392,753.85

Finding the Fourth Proportional to 80,454,910.65, 120,682,365.98 and 72,392,753.85

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Solution

The fourth proportional to 80,454,910.65, 120,682,365.98 and 72,392,753.85 is: 108,589,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,910.65 : 120,682,365.98 = 72,392,753.85 : x
  2. Step 2: Convert to fraction form
    80,454,910.65/120,682,365.98 = 72,392,753.85/x
  3. Step 3: Cross multiply
    80,454,910.65x = 120,682,365.98 × 72,392,753.85
  4. Step 4: Simplify right side
    80,454,910.65x = 8,736,528,814,063,789
  5. Step 5: Solve for x
    x = 8,736,528,814,063,789/80,454,910.65
  6. Step 6: Final answer
    x = 108,589,130.78

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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.