Home / 83,716.80-125,575.20-21,387.30

Finding the Fourth Proportional to 83,716.80, 125,575.20 and 21,387.30

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Solution

The fourth proportional to 83,716.80, 125,575.20 and 21,387.30 is: 32,080.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,716.80 : 125,575.20 = 21,387.30 : x
  2. Step 2: Convert to fraction form
    83,716.80/125,575.20 = 21,387.30/x
  3. Step 3: Cross multiply
    83,716.80x = 125,575.20 × 21,387.30
  4. Step 4: Simplify right side
    83,716.80x = 2,685,714,474.96
  5. Step 5: Solve for x
    x = 2,685,714,474.96/83,716.80
  6. Step 6: Final answer
    x = 32,080.95

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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.