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Finding the Fourth Proportional to 71,514.70, 107,272.05 and 68,234.20

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Solution

The fourth proportional to 71,514.70, 107,272.05 and 68,234.20 is: 102,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,514.70 : 107,272.05 = 68,234.20 : x
  2. Step 2: Convert to fraction form
    71,514.70/107,272.05 = 68,234.20/x
  3. Step 3: Cross multiply
    71,514.70x = 107,272.05 × 68,234.20
  4. Step 4: Simplify right side
    71,514.70x = 7,319,622,514.11
  5. Step 5: Solve for x
    x = 7,319,622,514.11/71,514.70
  6. Step 6: Final answer
    x = 102,351.30

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1.5x scale

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.