Home / 78,920.16-118,397.75-22,755.89

Finding the Fourth Proportional to 78,920.16, 118,397.75 and 22,755.89

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Solution

The fourth proportional to 78,920.16, 118,397.75 and 22,755.89 is: 34,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,920.16 : 118,397.75 = 22,755.89 : x
  2. Step 2: Convert to fraction form
    78,920.16/118,397.75 = 22,755.89/x
  3. Step 3: Cross multiply
    78,920.16x = 118,397.75 × 22,755.89
  4. Step 4: Simplify right side
    78,920.16x = 2,694,245,469.48
  5. Step 5: Solve for x
    x = 2,694,245,469.48/78,920.16
  6. Step 6: Final answer
    x = 34,138.87

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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.