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Finding the Fourth Proportional to 80,490.38, 120,708.23 and 27,887.59

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Solution

The fourth proportional to 80,490.38, 120,708.23 and 27,887.59 is: 41,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.38 : 120,708.23 = 27,887.59 : x
  2. Step 2: Convert to fraction form
    80,490.38/120,708.23 = 27,887.59/x
  3. Step 3: Cross multiply
    80,490.38x = 120,708.23 × 27,887.59
  4. Step 4: Simplify right side
    80,490.38x = 3,366,261,024.32
  5. Step 5: Solve for x
    x = 3,366,261,024.32/80,490.38
  6. Step 6: Final answer
    x = 41,821.90

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1.5x scale

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.