Home / 80,421.48-110,908.98-50,209.56

Finding the Fourth Proportional to 80,421.48, 110,908.98 and 50,209.56

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Solution

The fourth proportional to 80,421.48, 110,908.98 and 50,209.56 is: 69,243.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421.48 : 110,908.98 = 50,209.56 : x
  2. Step 2: Convert to fraction form
    80,421.48/110,908.98 = 50,209.56/x
  3. Step 3: Cross multiply
    80,421.48x = 110,908.98 × 50,209.56
  4. Step 4: Simplify right side
    80,421.48x = 5,568,691,085.85
  5. Step 5: Solve for x
    x = 5,568,691,085.85/80,421.48
  6. Step 6: Final answer
    x = 69,243.83

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1.5x scale

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.