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Finding the Fourth Proportional to 68,371.86, 94,357.90 and 38,163.08

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Solution

The fourth proportional to 68,371.86, 94,357.90 and 38,163.08 is: 52,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,371.86 : 94,357.90 = 38,163.08 : x
  2. Step 2: Convert to fraction form
    68,371.86/94,357.90 = 38,163.08/x
  3. Step 3: Cross multiply
    68,371.86x = 94,357.90 × 38,163.08
  4. Step 4: Simplify right side
    68,371.86x = 3,600,988,086.33
  5. Step 5: Solve for x
    x = 3,600,988,086.33/68,371.86
  6. Step 6: Final answer
    x = 52,667.69

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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.