Home / 80,372,365.74-120,561,817.82-38,285,422.68

Finding the Fourth Proportional to 80,372,365.74, 120,561,817.82 and 38,285,422.68

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Solution

The fourth proportional to 80,372,365.74, 120,561,817.82 and 38,285,422.68 is: 57,429,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,372,365.74 : 120,561,817.82 = 38,285,422.68 : x
  2. Step 2: Convert to fraction form
    80,372,365.74/120,561,817.82 = 38,285,422.68/x
  3. Step 3: Cross multiply
    80,372,365.74x = 120,561,817.82 × 38,285,422.68
  4. Step 4: Simplify right side
    80,372,365.74x = 4,615,760,153,890,376
  5. Step 5: Solve for x
    x = 4,615,760,153,890,376/80,372,365.74
  6. Step 6: Final answer
    x = 57,429,691.30

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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.