Home / 68,839.78-94,990.44-40,540

Finding the Fourth Proportional to 68,839.78, 94,990.44 and 40,540

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Solution

The fourth proportional to 68,839.78, 94,990.44 and 40,540 is: 55,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,839.78 : 94,990.44 = 40,540 : x
  2. Step 2: Convert to fraction form
    68,839.78/94,990.44 = 40,540/x
  3. Step 3: Cross multiply
    68,839.78x = 94,990.44 × 40,540
  4. Step 4: Simplify right side
    68,839.78x = 3,850,912,437.60
  5. Step 5: Solve for x
    x = 3,850,912,437.60/68,839.78
  6. Step 6: Final answer
    x = 55,940.22

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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.