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Finding the Fourth Proportional to 71,800, 99,049.98 and 50,590.96

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Solution

The fourth proportional to 71,800, 99,049.98 and 50,590.96 is: 69,791.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,800 : 99,049.98 = 50,590.96 : x
  2. Step 2: Convert to fraction form
    71,800/99,049.98 = 50,590.96/x
  3. Step 3: Cross multiply
    71,800x = 99,049.98 × 50,590.96
  4. Step 4: Simplify right side
    71,800x = 5,011,033,576.18
  5. Step 5: Solve for x
    x = 5,011,033,576.18/71,800
  6. Step 6: Final answer
    x = 69,791.55

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