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Finding the Fourth Proportional to 91,411.80, 137,127.30 and 29,067.80

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Solution

The fourth proportional to 91,411.80, 137,127.30 and 29,067.80 is: 43,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,411.80 : 137,127.30 = 29,067.80 : x
  2. Step 2: Convert to fraction form
    91,411.80/137,127.30 = 29,067.80/x
  3. Step 3: Cross multiply
    91,411.80x = 137,127.30 × 29,067.80
  4. Step 4: Simplify right side
    91,411.80x = 3,985,988,930.94
  5. Step 5: Solve for x
    x = 3,985,988,930.94/91,411.80
  6. Step 6: Final answer
    x = 43,604.75

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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.