Home / 80,671.04-121,061.68-28,080.52

Finding the Fourth Proportional to 80,671.04, 121,061.68 and 28,080.52

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Solution

The fourth proportional to 80,671.04, 121,061.68 and 28,080.52 is: 42,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,671.04 : 121,061.68 = 28,080.52 : x
  2. Step 2: Convert to fraction form
    80,671.04/121,061.68 = 28,080.52/x
  3. Step 3: Cross multiply
    80,671.04x = 121,061.68 × 28,080.52
  4. Step 4: Simplify right side
    80,671.04x = 3,399,474,321.17
  5. Step 5: Solve for x
    x = 3,399,474,321.17/80,671.04
  6. Step 6: Final answer
    x = 42,139.96

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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.