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Finding the Fourth Proportional to 68,984, 95,197.92 and 39,176

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Solution

The fourth proportional to 68,984, 95,197.92 and 39,176 is: 54,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,984 : 95,197.92 = 39,176 : x
  2. Step 2: Convert to fraction form
    68,984/95,197.92 = 39,176/x
  3. Step 3: Cross multiply
    68,984x = 95,197.92 × 39,176
  4. Step 4: Simplify right side
    68,984x = 3,729,473,713.92
  5. Step 5: Solve for x
    x = 3,729,473,713.92/68,984
  6. Step 6: Final answer
    x = 54,062.88

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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.