Home / 80,454,856.65-120,682,284.98-72,392,699.85

Finding the Fourth Proportional to 80,454,856.65, 120,682,284.98 and 72,392,699.85

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Solution

The fourth proportional to 80,454,856.65, 120,682,284.98 and 72,392,699.85 is: 108,589,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,856.65 : 120,682,284.98 = 72,392,699.85 : x
  2. Step 2: Convert to fraction form
    80,454,856.65/120,682,284.98 = 72,392,699.85/x
  3. Step 3: Cross multiply
    80,454,856.65x = 120,682,284.98 × 72,392,699.85
  4. Step 4: Simplify right side
    80,454,856.65x = 8,736,516,433,407,339
  5. Step 5: Solve for x
    x = 8,736,516,433,407,339/80,454,856.65
  6. Step 6: Final answer
    x = 108,589,049.78

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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.