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Finding the Fourth Proportional to 57,786.44, 79,439.11 and 49,690.44

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Solution

The fourth proportional to 57,786.44, 79,439.11 and 49,690.44 is: 68,309.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.44 : 79,439.11 = 49,690.44 : x
  2. Step 2: Convert to fraction form
    57,786.44/79,439.11 = 49,690.44/x
  3. Step 3: Cross multiply
    57,786.44x = 79,439.11 × 49,690.44
  4. Step 4: Simplify right side
    57,786.44x = 3,947,364,204.88
  5. Step 5: Solve for x
    x = 3,947,364,204.88/57,786.44
  6. Step 6: Final answer
    x = 68,309.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.