Home / 75,691.40-113,540.21-28,301.69

Finding the Fourth Proportional to 75,691.40, 113,540.21 and 28,301.69

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Solution

The fourth proportional to 75,691.40, 113,540.21 and 28,301.69 is: 42,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,691.40 : 113,540.21 = 28,301.69 : x
  2. Step 2: Convert to fraction form
    75,691.40/113,540.21 = 28,301.69/x
  3. Step 3: Cross multiply
    75,691.40x = 113,540.21 × 28,301.69
  4. Step 4: Simplify right side
    75,691.40x = 3,213,379,825.95
  5. Step 5: Solve for x
    x = 3,213,379,825.95/75,691.40
  6. Step 6: Final answer
    x = 42,453.70

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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.