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Finding the Fourth Proportional to 78,695.70, 108,590.67 and 44,691.90

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Solution

The fourth proportional to 78,695.70, 108,590.67 and 44,691.90 is: 61,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.70 : 108,590.67 = 44,691.90 : x
  2. Step 2: Convert to fraction form
    78,695.70/108,590.67 = 44,691.90/x
  3. Step 3: Cross multiply
    78,695.70x = 108,590.67 × 44,691.90
  4. Step 4: Simplify right side
    78,695.70x = 4,853,123,364.57
  5. Step 5: Solve for x
    x = 4,853,123,364.57/78,695.70
  6. Step 6: Final answer
    x = 61,669.49

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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.