Home / 80,379.77-120,545.03-55,579.19

Finding the Fourth Proportional to 80,379.77, 120,545.03 and 55,579.19

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Solution

The fourth proportional to 80,379.77, 120,545.03 and 55,579.19 is: 83,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,379.77 : 120,545.03 = 55,579.19 : x
  2. Step 2: Convert to fraction form
    80,379.77/120,545.03 = 55,579.19/x
  3. Step 3: Cross multiply
    80,379.77x = 120,545.03 × 55,579.19
  4. Step 4: Simplify right side
    80,379.77x = 6,699,795,149.39
  5. Step 5: Solve for x
    x = 6,699,795,149.39/80,379.77
  6. Step 6: Final answer
    x = 83,351.76

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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.