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Finding the Fourth Proportional to 68,181.98, 102,133.54 and 55,576.66

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Solution

The fourth proportional to 68,181.98, 102,133.54 and 55,576.66 is: 83,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,181.98 : 102,133.54 = 55,576.66 : x
  2. Step 2: Convert to fraction form
    68,181.98/102,133.54 = 55,576.66/x
  3. Step 3: Cross multiply
    68,181.98x = 102,133.54 × 55,576.66
  4. Step 4: Simplify right side
    68,181.98x = 5,676,240,745.56
  5. Step 5: Solve for x
    x = 5,676,240,745.56/68,181.98
  6. Step 6: Final answer
    x = 83,251.34

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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.