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Finding the Fourth Proportional to 91,791.51, 137,592.54 and 38,514.43

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Solution

The fourth proportional to 91,791.51, 137,592.54 and 38,514.43 is: 57,731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.51 : 137,592.54 = 38,514.43 : x
  2. Step 2: Convert to fraction form
    91,791.51/137,592.54 = 38,514.43/x
  3. Step 3: Cross multiply
    91,791.51x = 137,592.54 × 38,514.43
  4. Step 4: Simplify right side
    91,791.51x = 5,299,298,250.35
  5. Step 5: Solve for x
    x = 5,299,298,250.35/91,791.51
  6. Step 6: Final answer
    x = 57,731.90

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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.