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Finding the Fourth Proportional to 71,711.80, 107,553.30 and 34,271.80

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Solution

The fourth proportional to 71,711.80, 107,553.30 and 34,271.80 is: 51,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,711.80 : 107,553.30 = 34,271.80 : x
  2. Step 2: Convert to fraction form
    71,711.80/107,553.30 = 34,271.80/x
  3. Step 3: Cross multiply
    71,711.80x = 107,553.30 × 34,271.80
  4. Step 4: Simplify right side
    71,711.80x = 3,686,045,186.94
  5. Step 5: Solve for x
    x = 3,686,045,186.94/71,711.80
  6. Step 6: Final answer
    x = 51,400.82

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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.