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Finding the Fourth Proportional to 68,053.92, 102,115.80 and 28,102.56

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Solution

The fourth proportional to 68,053.92, 102,115.80 and 28,102.56 is: 42,168.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,053.92 : 102,115.80 = 28,102.56 : x
  2. Step 2: Convert to fraction form
    68,053.92/102,115.80 = 28,102.56/x
  3. Step 3: Cross multiply
    68,053.92x = 102,115.80 × 28,102.56
  4. Step 4: Simplify right side
    68,053.92x = 2,869,715,396.45
  5. Step 5: Solve for x
    x = 2,869,715,396.45/68,053.92
  6. Step 6: Final answer
    x = 42,168.26

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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.