Home / 80,432,942.60-120,680,906.70-29,320,128.20

Finding the Fourth Proportional to 80,432,942.60, 120,680,906.70 and 29,320,128.20

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Solution

The fourth proportional to 80,432,942.60, 120,680,906.70 and 29,320,128.20 is: 43,991,672.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,432,942.60 : 120,680,906.70 = 29,320,128.20 : x
  2. Step 2: Convert to fraction form
    80,432,942.60/120,680,906.70 = 29,320,128.20/x
  3. Step 3: Cross multiply
    80,432,942.60x = 120,680,906.70 × 29,320,128.20
  4. Step 4: Simplify right side
    80,432,942.60x = 3,538,379,655,736,239
  5. Step 5: Solve for x
    x = 3,538,379,655,736,239/80,432,942.60
  6. Step 6: Final answer
    x = 43,991,672.33

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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.