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Finding the Fourth Proportional to 91,067.88, 136,569.02 and 38,481.47

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Solution

The fourth proportional to 91,067.88, 136,569.02 and 38,481.47 is: 57,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,067.88 : 136,569.02 = 38,481.47 : x
  2. Step 2: Convert to fraction form
    91,067.88/136,569.02 = 38,481.47/x
  3. Step 3: Cross multiply
    91,067.88x = 136,569.02 × 38,481.47
  4. Step 4: Simplify right side
    91,067.88x = 5,255,375,770.81
  5. Step 5: Solve for x
    x = 5,255,375,770.81/91,067.88
  6. Step 6: Final answer
    x = 57,708.34

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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.