Home / 80,527.09-120,790.50-20,555.55

Finding the Fourth Proportional to 80,527.09, 120,790.50 and 20,555.55

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Solution

The fourth proportional to 80,527.09, 120,790.50 and 20,555.55 is: 30,833.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,527.09 : 120,790.50 = 20,555.55 : x
  2. Step 2: Convert to fraction form
    80,527.09/120,790.50 = 20,555.55/x
  3. Step 3: Cross multiply
    80,527.09x = 120,790.50 × 20,555.55
  4. Step 4: Simplify right side
    80,527.09x = 2,482,915,162.28
  5. Step 5: Solve for x
    x = 2,482,915,162.28/80,527.09
  6. Step 6: Final answer
    x = 30,833.29

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Double scale
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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.