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Finding the Fourth Proportional to 78,680.70, 108,569.97 and 44,676.90

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Solution

The fourth proportional to 78,680.70, 108,569.97 and 44,676.90 is: 61,648.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.70 : 108,569.97 = 44,676.90 : x
  2. Step 2: Convert to fraction form
    78,680.70/108,569.97 = 44,676.90/x
  3. Step 3: Cross multiply
    78,680.70x = 108,569.97 × 44,676.90
  4. Step 4: Simplify right side
    78,680.70x = 4,850,569,692.69
  5. Step 5: Solve for x
    x = 4,850,569,692.69/78,680.70
  6. Step 6: Final answer
    x = 61,648.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.