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Finding the Fourth Proportional to 68,243.84, 94,144.32 and 39,932.16

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Solution

The fourth proportional to 68,243.84, 94,144.32 and 39,932.16 is: 55,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,243.84 : 94,144.32 = 39,932.16 : x
  2. Step 2: Convert to fraction form
    68,243.84/94,144.32 = 39,932.16/x
  3. Step 3: Cross multiply
    68,243.84x = 94,144.32 × 39,932.16
  4. Step 4: Simplify right side
    68,243.84x = 3,759,386,049.33
  5. Step 5: Solve for x
    x = 3,759,386,049.33/68,243.84
  6. Step 6: Final answer
    x = 55,087.55

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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.