Home / 80,890.25-121,341.51-27,565.65

Finding the Fourth Proportional to 80,890.25, 121,341.51 and 27,565.65

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Solution

The fourth proportional to 80,890.25, 121,341.51 and 27,565.65 is: 41,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.25 : 121,341.51 = 27,565.65 : x
  2. Step 2: Convert to fraction form
    80,890.25/121,341.51 = 27,565.65/x
  3. Step 3: Cross multiply
    80,890.25x = 121,341.51 × 27,565.65
  4. Step 4: Simplify right side
    80,890.25x = 3,344,857,595.13
  5. Step 5: Solve for x
    x = 3,344,857,595.13/80,890.25
  6. Step 6: Final answer
    x = 41,350.57

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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.