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Finding the Fourth Proportional to 78,793.20, 118,211.70 and 43,757.46

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Solution

The fourth proportional to 78,793.20, 118,211.70 and 43,757.46 is: 65,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,793.20 : 118,211.70 = 43,757.46 : x
  2. Step 2: Convert to fraction form
    78,793.20/118,211.70 = 43,757.46/x
  3. Step 3: Cross multiply
    78,793.20x = 118,211.70 × 43,757.46
  4. Step 4: Simplify right side
    78,793.20x = 5,172,643,734.28
  5. Step 5: Solve for x
    x = 5,172,643,734.28/78,793.20
  6. Step 6: Final answer
    x = 65,648.35

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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.