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Finding the Fourth Proportional to 91,388.80, 137,092.80 and 29,044.80

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Solution

The fourth proportional to 91,388.80, 137,092.80 and 29,044.80 is: 43,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,388.80 : 137,092.80 = 29,044.80 : x
  2. Step 2: Convert to fraction form
    91,388.80/137,092.80 = 29,044.80/x
  3. Step 3: Cross multiply
    91,388.80x = 137,092.80 × 29,044.80
  4. Step 4: Simplify right side
    91,388.80x = 3,981,832,957.44
  5. Step 5: Solve for x
    x = 3,981,832,957.44/91,388.80
  6. Step 6: Final answer
    x = 43,570.25

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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.