Home / 80,966.16-121,449.96-28,375.56

Finding the Fourth Proportional to 80,966.16, 121,449.96 and 28,375.56

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Solution

The fourth proportional to 80,966.16, 121,449.96 and 28,375.56 is: 42,563.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,966.16 : 121,449.96 = 28,375.56 : x
  2. Step 2: Convert to fraction form
    80,966.16/121,449.96 = 28,375.56/x
  3. Step 3: Cross multiply
    80,966.16x = 121,449.96 × 28,375.56
  4. Step 4: Simplify right side
    80,966.16x = 3,446,210,626.98
  5. Step 5: Solve for x
    x = 3,446,210,626.98/80,966.16
  6. Step 6: Final answer
    x = 42,563.59

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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.