Home / 80,427.12-120,650.88-30,524.64

Finding the Fourth Proportional to 80,427.12, 120,650.88 and 30,524.64

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Solution

The fourth proportional to 80,427.12, 120,650.88 and 30,524.64 is: 45,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,427.12 : 120,650.88 = 30,524.64 : x
  2. Step 2: Convert to fraction form
    80,427.12/120,650.88 = 30,524.64/x
  3. Step 3: Cross multiply
    80,427.12x = 120,650.88 × 30,524.64
  4. Step 4: Simplify right side
    80,427.12x = 3,682,824,677.68
  5. Step 5: Solve for x
    x = 3,682,824,677.68/80,427.12
  6. Step 6: Final answer
    x = 45,790.83

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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.