Home / 78,920.11-118,397.66-22,755.84

Finding the Fourth Proportional to 78,920.11, 118,397.66 and 22,755.84

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Solution

The fourth proportional to 78,920.11, 118,397.66 and 22,755.84 is: 34,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,920.11 : 118,397.66 = 22,755.84 : x
  2. Step 2: Convert to fraction form
    78,920.11/118,397.66 = 22,755.84/x
  3. Step 3: Cross multiply
    78,920.11x = 118,397.66 × 22,755.84
  4. Step 4: Simplify right side
    78,920.11x = 2,694,238,207.33
  5. Step 5: Solve for x
    x = 2,694,238,207.33/78,920.11
  6. Step 6: Final answer
    x = 34,138.80

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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.