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Finding the Fourth Proportional to 68,974, 95,184.21 and 39,166

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Solution

The fourth proportional to 68,974, 95,184.21 and 39,166 is: 54,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,974 : 95,184.21 = 39,166 : x
  2. Step 2: Convert to fraction form
    68,974/95,184.21 = 39,166/x
  3. Step 3: Cross multiply
    68,974x = 95,184.21 × 39,166
  4. Step 4: Simplify right side
    68,974x = 3,727,984,768.86
  5. Step 5: Solve for x
    x = 3,727,984,768.86/68,974
  6. Step 6: Final answer
    x = 54,049.13

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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.