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Finding the Fourth Proportional to 69,479.60, 95,881.44 and 39,274.70

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Solution

The fourth proportional to 69,479.60, 95,881.44 and 39,274.70 is: 54,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,479.60 : 95,881.44 = 39,274.70 : x
  2. Step 2: Convert to fraction form
    69,479.60/95,881.44 = 39,274.70/x
  3. Step 3: Cross multiply
    69,479.60x = 95,881.44 × 39,274.70
  4. Step 4: Simplify right side
    69,479.60x = 3,765,714,791.57
  5. Step 5: Solve for x
    x = 3,765,714,791.57/69,479.60
  6. Step 6: Final answer
    x = 54,198.86

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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.