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Finding the Fourth Proportional to 51,791.76, 71,474.75 and 29,131.80

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Solution

The fourth proportional to 51,791.76, 71,474.75 and 29,131.80 is: 40,203.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,791.76 : 71,474.75 = 29,131.80 : x
  2. Step 2: Convert to fraction form
    51,791.76/71,474.75 = 29,131.80/x
  3. Step 3: Cross multiply
    51,791.76x = 71,474.75 × 29,131.80
  4. Step 4: Simplify right side
    51,791.76x = 2,082,187,976.39
  5. Step 5: Solve for x
    x = 2,082,187,976.39/51,791.76
  6. Step 6: Final answer
    x = 40,203.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.