Home / 80,620.20-111,305.66-51,949.98

Finding the Fourth Proportional to 80,620.20, 111,305.66 and 51,949.98

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Solution

The fourth proportional to 80,620.20, 111,305.66 and 51,949.98 is: 71,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.20 : 111,305.66 = 51,949.98 : x
  2. Step 2: Convert to fraction form
    80,620.20/111,305.66 = 51,949.98/x
  3. Step 3: Cross multiply
    80,620.20x = 111,305.66 × 51,949.98
  4. Step 4: Simplify right side
    80,620.20x = 5,782,326,810.89
  5. Step 5: Solve for x
    x = 5,782,326,810.89/80,620.20
  6. Step 6: Final answer
    x = 71,723.05

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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.