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Finding the Fourth Proportional to 71,360.70, 107,041.05 and 68,080.20

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Solution

The fourth proportional to 71,360.70, 107,041.05 and 68,080.20 is: 102,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,360.70 : 107,041.05 = 68,080.20 : x
  2. Step 2: Convert to fraction form
    71,360.70/107,041.05 = 68,080.20/x
  3. Step 3: Cross multiply
    71,360.70x = 107,041.05 × 68,080.20
  4. Step 4: Simplify right side
    71,360.70x = 7,287,376,092.21
  5. Step 5: Solve for x
    x = 7,287,376,092.21/71,360.70
  6. Step 6: Final answer
    x = 102,120.30

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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.