Home / 75,561,721.12-113,343,216.60-20,978,562.76

Finding the Fourth Proportional to 75,561,721.12, 113,343,216.60 and 20,978,562.76

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Solution

The fourth proportional to 75,561,721.12, 113,343,216.60 and 20,978,562.76 is: 31,468,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,561,721.12 : 113,343,216.60 = 20,978,562.76 : x
  2. Step 2: Convert to fraction form
    75,561,721.12/113,343,216.60 = 20,978,562.76/x
  3. Step 3: Cross multiply
    75,561,721.12x = 113,343,216.60 × 20,978,562.76
  4. Step 4: Simplify right side
    75,561,721.12x = 2,377,777,782,863,374
  5. Step 5: Solve for x
    x = 2,377,777,782,863,374/75,561,721.12
  6. Step 6: Final answer
    x = 31,468,020.42

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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.