Home / 80,629,721.52-120,945,026.96-20,045,447.52

Finding the Fourth Proportional to 80,629,721.52, 120,945,026.96 and 20,045,447.52

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Solution

The fourth proportional to 80,629,721.52, 120,945,026.96 and 20,045,447.52 is: 30,068,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,629,721.52 : 120,945,026.96 = 20,045,447.52 : x
  2. Step 2: Convert to fraction form
    80,629,721.52/120,945,026.96 = 20,045,447.52/x
  3. Step 3: Cross multiply
    80,629,721.52x = 120,945,026.96 × 20,045,447.52
  4. Step 4: Simplify right side
    80,629,721.52x = 2,424,397,190,731,665
  5. Step 5: Solve for x
    x = 2,424,397,190,731,665/80,629,721.52
  6. Step 6: Final answer
    x = 30,068,281.83

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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.