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Finding the Fourth Proportional to 80,491.94, 120,710.57 and 27,889.15

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Solution

The fourth proportional to 80,491.94, 120,710.57 and 27,889.15 is: 41,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.94 : 120,710.57 = 27,889.15 : x
  2. Step 2: Convert to fraction form
    80,491.94/120,710.57 = 27,889.15/x
  3. Step 3: Cross multiply
    80,491.94x = 120,710.57 × 27,889.15
  4. Step 4: Simplify right side
    80,491.94x = 3,366,514,961.26
  5. Step 5: Solve for x
    x = 3,366,514,961.26/80,491.94
  6. Step 6: Final answer
    x = 41,824.25

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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.