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Finding the Fourth Proportional to 68,933.52, 95,121.54 and 38,712

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Solution

The fourth proportional to 68,933.52, 95,121.54 and 38,712 is: 53,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,933.52 : 95,121.54 = 38,712 : x
  2. Step 2: Convert to fraction form
    68,933.52/95,121.54 = 38,712/x
  3. Step 3: Cross multiply
    68,933.52x = 95,121.54 × 38,712
  4. Step 4: Simplify right side
    68,933.52x = 3,682,345,056.48
  5. Step 5: Solve for x
    x = 3,682,345,056.48/68,933.52
  6. Step 6: Final answer
    x = 53,418.79

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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.