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Finding the Fourth Proportional to 69,081, 95,331.78 and 39,273

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Solution

The fourth proportional to 69,081, 95,331.78 and 39,273 is: 54,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,081 : 95,331.78 = 39,273 : x
  2. Step 2: Convert to fraction form
    69,081/95,331.78 = 39,273/x
  3. Step 3: Cross multiply
    69,081x = 95,331.78 × 39,273
  4. Step 4: Simplify right side
    69,081x = 3,743,964,995.94
  5. Step 5: Solve for x
    x = 3,743,964,995.94/69,081
  6. Step 6: Final answer
    x = 54,196.74

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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.