Home / 80,490.26-120,708.05-27,887.46

Finding the Fourth Proportional to 80,490.26, 120,708.05 and 27,887.46

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Solution

The fourth proportional to 80,490.26, 120,708.05 and 27,887.46 is: 41,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.26 : 120,708.05 = 27,887.46 : x
  2. Step 2: Convert to fraction form
    80,490.26/120,708.05 = 27,887.46/x
  3. Step 3: Cross multiply
    80,490.26x = 120,708.05 × 27,887.46
  4. Step 4: Simplify right side
    80,490.26x = 3,366,240,776.62
  5. Step 5: Solve for x
    x = 3,366,240,776.62/80,490.26
  6. Step 6: Final answer
    x = 41,821.72

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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.