Home / 80,539.49-120,799.83-21,379.74

Finding the Fourth Proportional to 80,539.49, 120,799.83 and 21,379.74

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Solution

The fourth proportional to 80,539.49, 120,799.83 and 21,379.74 is: 32,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,539.49 : 120,799.83 = 21,379.74 : x
  2. Step 2: Convert to fraction form
    80,539.49/120,799.83 = 21,379.74/x
  3. Step 3: Cross multiply
    80,539.49x = 120,799.83 × 21,379.74
  4. Step 4: Simplify right side
    80,539.49x = 2,582,668,957.44
  5. Step 5: Solve for x
    x = 2,582,668,957.44/80,539.49
  6. Step 6: Final answer
    x = 32,067.12

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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.