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Finding the Fourth Proportional to 68,988.38, 95,203.15 and 38,778.82

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Solution

The fourth proportional to 68,988.38, 95,203.15 and 38,778.82 is: 53,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,988.38 : 95,203.15 = 38,778.82 : x
  2. Step 2: Convert to fraction form
    68,988.38/95,203.15 = 38,778.82/x
  3. Step 3: Cross multiply
    68,988.38x = 95,203.15 × 38,778.82
  4. Step 4: Simplify right side
    68,988.38x = 3,691,865,482.33
  5. Step 5: Solve for x
    x = 3,691,865,482.33/68,988.38
  6. Step 6: Final answer
    x = 53,514.31

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1.5x scale

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.