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Finding the Fourth Proportional to 68,020.80, 101,836.80 and 52,339.20

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Solution

The fourth proportional to 68,020.80, 101,836.80 and 52,339.20 is: 78,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,020.80 : 101,836.80 = 52,339.20 : x
  2. Step 2: Convert to fraction form
    68,020.80/101,836.80 = 52,339.20/x
  3. Step 3: Cross multiply
    68,020.80x = 101,836.80 × 52,339.20
  4. Step 4: Simplify right side
    68,020.80x = 5,330,056,642.56
  5. Step 5: Solve for x
    x = 5,330,056,642.56/68,020.80
  6. Step 6: Final answer
    x = 78,359.22

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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.