Home / 75,849.46-113,775.91-19,691.78

Finding the Fourth Proportional to 75,849.46, 113,775.91 and 19,691.78

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Solution

The fourth proportional to 75,849.46, 113,775.91 and 19,691.78 is: 29,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,849.46 : 113,775.91 = 19,691.78 : x
  2. Step 2: Convert to fraction form
    75,849.46/113,775.91 = 19,691.78/x
  3. Step 3: Cross multiply
    75,849.46x = 113,775.91 × 19,691.78
  4. Step 4: Simplify right side
    75,849.46x = 2,240,449,570.91
  5. Step 5: Solve for x
    x = 2,240,449,570.91/75,849.46
  6. Step 6: Final answer
    x = 29,538.11

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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.