Home / 80,540.16-120,810.24-30,608.52

Finding the Fourth Proportional to 80,540.16, 120,810.24 and 30,608.52

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Solution

The fourth proportional to 80,540.16, 120,810.24 and 30,608.52 is: 45,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,540.16 : 120,810.24 = 30,608.52 : x
  2. Step 2: Convert to fraction form
    80,540.16/120,810.24 = 30,608.52/x
  3. Step 3: Cross multiply
    80,540.16x = 120,810.24 × 30,608.52
  4. Step 4: Simplify right side
    80,540.16x = 3,697,822,647.24
  5. Step 5: Solve for x
    x = 3,697,822,647.24/80,540.16
  6. Step 6: Final answer
    x = 45,912.78

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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.