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Finding the Fourth Proportional to 73,108.68, 109,818.38 and 68,842.66

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Solution

The fourth proportional to 73,108.68, 109,818.38 and 68,842.66 is: 103,410.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,108.68 : 109,818.38 = 68,842.66 : x
  2. Step 2: Convert to fraction form
    73,108.68/109,818.38 = 68,842.66/x
  3. Step 3: Cross multiply
    73,108.68x = 109,818.38 × 68,842.66
  4. Step 4: Simplify right side
    73,108.68x = 7,560,189,499.56
  5. Step 5: Solve for x
    x = 7,560,189,499.56/73,108.68
  6. Step 6: Final answer
    x = 103,410.29

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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.