Home / 78,072.34-117,127.17-25,481.92

Finding the Fourth Proportional to 78,072.34, 117,127.17 and 25,481.92

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Solution

The fourth proportional to 78,072.34, 117,127.17 and 25,481.92 is: 38,228.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,072.34 : 117,127.17 = 25,481.92 : x
  2. Step 2: Convert to fraction form
    78,072.34/117,127.17 = 25,481.92/x
  3. Step 3: Cross multiply
    78,072.34x = 117,127.17 × 25,481.92
  4. Step 4: Simplify right side
    78,072.34x = 2,984,625,175.77
  5. Step 5: Solve for x
    x = 2,984,625,175.77/78,072.34
  6. Step 6: Final answer
    x = 38,228.97

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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.