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Finding the Fourth Proportional to 69,691.39, 96,170.78 and 39,475.96

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Solution

The fourth proportional to 69,691.39, 96,170.78 and 39,475.96 is: 54,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,691.39 : 96,170.78 = 39,475.96 : x
  2. Step 2: Convert to fraction form
    69,691.39/96,170.78 = 39,475.96/x
  3. Step 3: Cross multiply
    69,691.39x = 96,170.78 × 39,475.96
  4. Step 4: Simplify right side
    69,691.39x = 3,796,433,722.71
  5. Step 5: Solve for x
    x = 3,796,433,722.71/69,691.39
  6. Step 6: Final answer
    x = 54,474.93

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1.5x scale

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.