Home / 80,497,965.10-120,746,947.65-71,763,961.90

Finding the Fourth Proportional to 80,497,965.10, 120,746,947.65 and 71,763,961.90

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Solution

The fourth proportional to 80,497,965.10, 120,746,947.65 and 71,763,961.90 is: 107,645,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,497,965.10 : 120,746,947.65 = 71,763,961.90 : x
  2. Step 2: Convert to fraction form
    80,497,965.10/120,746,947.65 = 71,763,961.90/x
  3. Step 3: Cross multiply
    80,497,965.10x = 120,746,947.65 × 71,763,961.90
  4. Step 4: Simplify right side
    80,497,965.10x = 8,665,279,350,695,896
  5. Step 5: Solve for x
    x = 8,665,279,350,695,896/80,497,965.10
  6. Step 6: Final answer
    x = 107,645,942.85

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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.