Home / 80,380.27-120,545.77-55,579.69

Finding the Fourth Proportional to 80,380.27, 120,545.77 and 55,579.69

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Solution

The fourth proportional to 80,380.27, 120,545.77 and 55,579.69 is: 83,352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380.27 : 120,545.77 = 55,579.69 : x
  2. Step 2: Convert to fraction form
    80,380.27/120,545.77 = 55,579.69/x
  3. Step 3: Cross multiply
    80,380.27x = 120,545.77 × 55,579.69
  4. Step 4: Simplify right side
    80,380.27x = 6,699,896,527.41
  5. Step 5: Solve for x
    x = 6,699,896,527.41/80,380.27
  6. Step 6: Final answer
    x = 83,352.50

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1.5x scale

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.