Home / 80,615.12-120,933.24-28,028.56

Finding the Fourth Proportional to 80,615.12, 120,933.24 and 28,028.56

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Solution

The fourth proportional to 80,615.12, 120,933.24 and 28,028.56 is: 42,046.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.12 : 120,933.24 = 28,028.56 : x
  2. Step 2: Convert to fraction form
    80,615.12/120,933.24 = 28,028.56/x
  3. Step 3: Cross multiply
    80,615.12x = 120,933.24 × 28,028.56
  4. Step 4: Simplify right side
    80,615.12x = 3,389,584,573.33
  5. Step 5: Solve for x
    x = 3,389,584,573.33/80,615.12
  6. Step 6: Final answer
    x = 42,046.51

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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.