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Finding the Fourth Proportional to 50,699.80, 75,974.82 and 45,163.72

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Solution

The fourth proportional to 50,699.80, 75,974.82 and 45,163.72 is: 67,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,699.80 : 75,974.82 = 45,163.72 : x
  2. Step 2: Convert to fraction form
    50,699.80/75,974.82 = 45,163.72/x
  3. Step 3: Cross multiply
    50,699.80x = 75,974.82 × 45,163.72
  4. Step 4: Simplify right side
    50,699.80x = 3,431,305,497.53
  5. Step 5: Solve for x
    x = 3,431,305,497.53/50,699.80
  6. Step 6: Final answer
    x = 67,678.88

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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.