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Finding the Fourth Proportional to 85.41, 117.87 and 50.44

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Solution

The fourth proportional to 85.41, 117.87 and 50.44 is: 69.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85.41 : 117.87 = 50.44 : x
  2. Step 2: Convert to fraction form
    85.41/117.87 = 50.44/x
  3. Step 3: Cross multiply
    85.41x = 117.87 × 50.44
  4. Step 4: Simplify right side
    85.41x = 5,945.36
  5. Step 5: Solve for x
    x = 5,945.36/85.41
  6. Step 6: Final answer
    x = 69.61

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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.