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Finding the Fourth Proportional to 68,086.75, 93,959.72 and 38,278.75

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Solution

The fourth proportional to 68,086.75, 93,959.72 and 38,278.75 is: 52,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,086.75 : 93,959.72 = 38,278.75 : x
  2. Step 2: Convert to fraction form
    68,086.75/93,959.72 = 38,278.75/x
  3. Step 3: Cross multiply
    68,086.75x = 93,959.72 × 38,278.75
  4. Step 4: Simplify right side
    68,086.75x = 3,596,660,631.95
  5. Step 5: Solve for x
    x = 3,596,660,631.95/68,086.75
  6. Step 6: Final answer
    x = 52,824.68

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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.