Home / 80,001.27-120,001.86-20,836.80

Finding the Fourth Proportional to 80,001.27, 120,001.86 and 20,836.80

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Solution

The fourth proportional to 80,001.27, 120,001.86 and 20,836.80 is: 31,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,001.27 : 120,001.86 = 20,836.80 : x
  2. Step 2: Convert to fraction form
    80,001.27/120,001.86 = 20,836.80/x
  3. Step 3: Cross multiply
    80,001.27x = 120,001.86 × 20,836.80
  4. Step 4: Simplify right side
    80,001.27x = 2,500,454,756.45
  5. Step 5: Solve for x
    x = 2,500,454,756.45/80,001.27
  6. Step 6: Final answer
    x = 31,255.19

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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.