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Finding the Fourth Proportional to 80,491.88, 120,710.48 and 27,889.09

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Solution

The fourth proportional to 80,491.88, 120,710.48 and 27,889.09 is: 41,824.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.88 : 120,710.48 = 27,889.09 : x
  2. Step 2: Convert to fraction form
    80,491.88/120,710.48 = 27,889.09/x
  3. Step 3: Cross multiply
    80,491.88x = 120,710.48 × 27,889.09
  4. Step 4: Simplify right side
    80,491.88x = 3,366,505,440.66
  5. Step 5: Solve for x
    x = 3,366,505,440.66/80,491.88
  6. Step 6: Final answer
    x = 41,824.16

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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.