Home / 68,739.23-103,108.89-18,819.74

Finding the Fourth Proportional to 68,739.23, 103,108.89 and 18,819.74

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Solution

The fourth proportional to 68,739.23, 103,108.89 and 18,819.74 is: 28,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,739.23 : 103,108.89 = 18,819.74 : x
  2. Step 2: Convert to fraction form
    68,739.23/103,108.89 = 18,819.74/x
  3. Step 3: Cross multiply
    68,739.23x = 103,108.89 × 18,819.74
  4. Step 4: Simplify right side
    68,739.23x = 1,940,481,938.89
  5. Step 5: Solve for x
    x = 1,940,481,938.89/68,739.23
  6. Step 6: Final answer
    x = 28,229.62

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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.