Home / 78,344.97-117,257.58-71,341.17

Finding the Fourth Proportional to 78,344.97, 117,257.58 and 71,341.17

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Solution

The fourth proportional to 78,344.97, 117,257.58 and 71,341.17 is: 106,775.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344.97 : 117,257.58 = 71,341.17 : x
  2. Step 2: Convert to fraction form
    78,344.97/117,257.58 = 71,341.17/x
  3. Step 3: Cross multiply
    78,344.97x = 117,257.58 × 71,341.17
  4. Step 4: Simplify right side
    78,344.97x = 8,365,292,948.57
  5. Step 5: Solve for x
    x = 8,365,292,948.57/78,344.97
  6. Step 6: Final answer
    x = 106,775.11

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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.