Home / 78,414.58-108,138.33-60,481.18

Finding the Fourth Proportional to 78,414.58, 108,138.33 and 60,481.18

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Solution

The fourth proportional to 78,414.58, 108,138.33 and 60,481.18 is: 83,407.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414.58 : 108,138.33 = 60,481.18 : x
  2. Step 2: Convert to fraction form
    78,414.58/108,138.33 = 60,481.18/x
  3. Step 3: Cross multiply
    78,414.58x = 108,138.33 × 60,481.18
  4. Step 4: Simplify right side
    78,414.58x = 6,540,333,801.63
  5. Step 5: Solve for x
    x = 6,540,333,801.63/78,414.58
  6. Step 6: Final answer
    x = 83,407.11

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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.