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Finding the Fourth Proportional to 69,229.05, 104,060.34 and 45,687.88

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Solution

The fourth proportional to 69,229.05, 104,060.34 and 45,687.88 is: 68,674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,229.05 : 104,060.34 = 45,687.88 : x
  2. Step 2: Convert to fraction form
    69,229.05/104,060.34 = 45,687.88/x
  3. Step 3: Cross multiply
    69,229.05x = 104,060.34 × 45,687.88
  4. Step 4: Simplify right side
    69,229.05x = 4,754,296,326.68
  5. Step 5: Solve for x
    x = 4,754,296,326.68/69,229.05
  6. Step 6: Final answer
    x = 68,674.87

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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.