Home / 80,246.43-120,370.25-21,081.99

Finding the Fourth Proportional to 80,246.43, 120,370.25 and 21,081.99

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Solution

The fourth proportional to 80,246.43, 120,370.25 and 21,081.99 is: 31,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,246.43 : 120,370.25 = 21,081.99 : x
  2. Step 2: Convert to fraction form
    80,246.43/120,370.25 = 21,081.99/x
  3. Step 3: Cross multiply
    80,246.43x = 120,370.25 × 21,081.99
  4. Step 4: Simplify right side
    80,246.43x = 2,537,644,301.39
  5. Step 5: Solve for x
    x = 2,537,644,301.39/80,246.43
  6. Step 6: Final answer
    x = 31,623.14

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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.