Home / 78,326.20-117,493.87-22,161.61

Finding the Fourth Proportional to 78,326.20, 117,493.87 and 22,161.61

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Solution

The fourth proportional to 78,326.20, 117,493.87 and 22,161.61 is: 33,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,326.20 : 117,493.87 = 22,161.61 : x
  2. Step 2: Convert to fraction form
    78,326.20/117,493.87 = 22,161.61/x
  3. Step 3: Cross multiply
    78,326.20x = 117,493.87 × 22,161.61
  4. Step 4: Simplify right side
    78,326.20x = 2,603,853,213.52
  5. Step 5: Solve for x
    x = 2,603,853,213.52/78,326.20
  6. Step 6: Final answer
    x = 33,243.71

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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.