Home / 80,037.08-120,055.60-20,872.59

Finding the Fourth Proportional to 80,037.08, 120,055.60 and 20,872.59

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Solution

The fourth proportional to 80,037.08, 120,055.60 and 20,872.59 is: 31,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,037.08 : 120,055.60 = 20,872.59 : x
  2. Step 2: Convert to fraction form
    80,037.08/120,055.60 = 20,872.59/x
  3. Step 3: Cross multiply
    80,037.08x = 120,055.60 × 20,872.59
  4. Step 4: Simplify right side
    80,037.08x = 2,505,870,891.89
  5. Step 5: Solve for x
    x = 2,505,870,891.89/80,037.08
  6. Step 6: Final answer
    x = 31,308.87

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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.