Home / 75,561,729.12-113,343,228.60-20,978,570.76

Finding the Fourth Proportional to 75,561,729.12, 113,343,228.60 and 20,978,570.76

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Solution

The fourth proportional to 75,561,729.12, 113,343,228.60 and 20,978,570.76 is: 31,468,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,561,729.12 : 113,343,228.60 = 20,978,570.76 : x
  2. Step 2: Convert to fraction form
    75,561,729.12/113,343,228.60 = 20,978,570.76/x
  3. Step 3: Cross multiply
    75,561,729.12x = 113,343,228.60 × 20,978,570.76
  4. Step 4: Simplify right side
    75,561,729.12x = 2,377,778,941,351,956
  5. Step 5: Solve for x
    x = 2,377,778,941,351,956/75,561,729.12
  6. Step 6: Final answer
    x = 31,468,032.42

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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.