Home / 80,432,815.10-120,680,715.45-29,320,000.70

Finding the Fourth Proportional to 80,432,815.10, 120,680,715.45 and 29,320,000.70

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Solution

The fourth proportional to 80,432,815.10, 120,680,715.45 and 29,320,000.70 is: 43,991,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,432,815.10 : 120,680,715.45 = 29,320,000.70 : x
  2. Step 2: Convert to fraction form
    80,432,815.10/120,680,715.45 = 29,320,000.70/x
  3. Step 3: Cross multiply
    80,432,815.10x = 120,680,715.45 × 29,320,000.70
  4. Step 4: Simplify right side
    80,432,815.10x = 3,538,358,661,470,501
  5. Step 5: Solve for x
    x = 3,538,358,661,470,501/80,432,815.10
  6. Step 6: Final answer
    x = 43,991,481.05

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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.