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Finding the Fourth Proportional to 87,634.88, 120,936.13 and 49,912.64

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Solution

The fourth proportional to 87,634.88, 120,936.13 and 49,912.64 is: 68,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,634.88 : 120,936.13 = 49,912.64 : x
  2. Step 2: Convert to fraction form
    87,634.88/120,936.13 = 49,912.64/x
  3. Step 3: Cross multiply
    87,634.88x = 120,936.13 × 49,912.64
  4. Step 4: Simplify right side
    87,634.88x = 6,036,240,790.22
  5. Step 5: Solve for x
    x = 6,036,240,790.22/87,634.88
  6. Step 6: Final answer
    x = 68,879.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.