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Finding the Fourth Proportional to 68,959.50, 95,164.20 and 39,151.50

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Solution

The fourth proportional to 68,959.50, 95,164.20 and 39,151.50 is: 54,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,959.50 : 95,164.20 = 39,151.50 : x
  2. Step 2: Convert to fraction form
    68,959.50/95,164.20 = 39,151.50/x
  3. Step 3: Cross multiply
    68,959.50x = 95,164.20 × 39,151.50
  4. Step 4: Simplify right side
    68,959.50x = 3,725,821,176.30
  5. Step 5: Solve for x
    x = 3,725,821,176.30/68,959.50
  6. Step 6: Final answer
    x = 54,029.12

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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.