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Finding the Fourth Proportional to 68,080.80, 102,204.40 and 38,519.20

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Solution

The fourth proportional to 68,080.80, 102,204.40 and 38,519.20 is: 57,825.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,080.80 : 102,204.40 = 38,519.20 : x
  2. Step 2: Convert to fraction form
    68,080.80/102,204.40 = 38,519.20/x
  3. Step 3: Cross multiply
    68,080.80x = 102,204.40 × 38,519.20
  4. Step 4: Simplify right side
    68,080.80x = 3,936,831,724.48
  5. Step 5: Solve for x
    x = 3,936,831,724.48/68,080.80
  6. Step 6: Final answer
    x = 57,825.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.