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Finding the Fourth Proportional to 91,375.76, 137,062.20 and 29,045.36

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Solution

The fourth proportional to 91,375.76, 137,062.20 and 29,045.36 is: 43,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,375.76 : 137,062.20 = 29,045.36 : x
  2. Step 2: Convert to fraction form
    91,375.76/137,062.20 = 29,045.36/x
  3. Step 3: Cross multiply
    91,375.76x = 137,062.20 × 29,045.36
  4. Step 4: Simplify right side
    91,375.76x = 3,981,020,941.39
  5. Step 5: Solve for x
    x = 3,981,020,941.39/91,375.76
  6. Step 6: Final answer
    x = 43,567.58

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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.