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Finding the Fourth Proportional to 66,791.43, 100,156.01 and 38,719.52

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Solution

The fourth proportional to 66,791.43, 100,156.01 and 38,719.52 is: 58,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.43 : 100,156.01 = 38,719.52 : x
  2. Step 2: Convert to fraction form
    66,791.43/100,156.01 = 38,719.52/x
  3. Step 3: Cross multiply
    66,791.43x = 100,156.01 × 38,719.52
  4. Step 4: Simplify right side
    66,791.43x = 3,877,991,937.94
  5. Step 5: Solve for x
    x = 3,877,991,937.94/66,791.43
  6. Step 6: Final answer
    x = 58,061.22

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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.