Home / 78,196.73-108,001.17-51,458.61

Finding the Fourth Proportional to 78,196.73, 108,001.17 and 51,458.61

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Solution

The fourth proportional to 78,196.73, 108,001.17 and 51,458.61 is: 71,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,196.73 : 108,001.17 = 51,458.61 : x
  2. Step 2: Convert to fraction form
    78,196.73/108,001.17 = 51,458.61/x
  3. Step 3: Cross multiply
    78,196.73x = 108,001.17 × 51,458.61
  4. Step 4: Simplify right side
    78,196.73x = 5,557,590,028.80
  5. Step 5: Solve for x
    x = 5,557,590,028.80/78,196.73
  6. Step 6: Final answer
    x = 71,071.90

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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.