Home / 80,372,884.80-120,407,618.40-47,485,321.92

Finding the Fourth Proportional to 80,372,884.80, 120,407,618.40 and 47,485,321.92

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Solution

The fourth proportional to 80,372,884.80, 120,407,618.40 and 47,485,321.92 is: 71,138,351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,372,884.80 : 120,407,618.40 = 47,485,321.92 : x
  2. Step 2: Convert to fraction form
    80,372,884.80/120,407,618.40 = 47,485,321.92/x
  3. Step 3: Cross multiply
    80,372,884.80x = 120,407,618.40 × 47,485,321.92
  4. Step 4: Simplify right side
    80,372,884.80x = 5,717,594,521,344,516
  5. Step 5: Solve for x
    x = 5,717,594,521,344,516/80,372,884.80
  6. Step 6: Final answer
    x = 71,138,351.39

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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.