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Finding the Fourth Proportional to 87,644.63, 120,947.02 and 49,406.42

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Solution

The fourth proportional to 87,644.63, 120,947.02 and 49,406.42 is: 68,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,644.63 : 120,947.02 = 49,406.42 : x
  2. Step 2: Convert to fraction form
    87,644.63/120,947.02 = 49,406.42/x
  3. Step 3: Cross multiply
    87,644.63x = 120,947.02 × 49,406.42
  4. Step 4: Simplify right side
    87,644.63x = 5,975,558,539.62
  5. Step 5: Solve for x
    x = 5,975,558,539.62/87,644.63
  6. Step 6: Final answer
    x = 68,179.41

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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.