Home / 78,573.24-108,480.06-54,691.20

Finding the Fourth Proportional to 78,573.24, 108,480.06 and 54,691.20

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Solution

The fourth proportional to 78,573.24, 108,480.06 and 54,691.20 is: 75,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,573.24 : 108,480.06 = 54,691.20 : x
  2. Step 2: Convert to fraction form
    78,573.24/108,480.06 = 54,691.20/x
  3. Step 3: Cross multiply
    78,573.24x = 108,480.06 × 54,691.20
  4. Step 4: Simplify right side
    78,573.24x = 5,932,904,657.47
  5. Step 5: Solve for x
    x = 5,932,904,657.47/78,573.24
  6. Step 6: Final answer
    x = 75,507.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.