Home / 80,339.13-120,498.96-21,179.25

Finding the Fourth Proportional to 80,339.13, 120,498.96 and 21,179.25

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Solution

The fourth proportional to 80,339.13, 120,498.96 and 21,179.25 is: 31,766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,339.13 : 120,498.96 = 21,179.25 : x
  2. Step 2: Convert to fraction form
    80,339.13/120,498.96 = 21,179.25/x
  3. Step 3: Cross multiply
    80,339.13x = 120,498.96 × 21,179.25
  4. Step 4: Simplify right side
    80,339.13x = 2,552,077,598.58
  5. Step 5: Solve for x
    x = 2,552,077,598.58/80,339.13
  6. Step 6: Final answer
    x = 31,766.31

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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.