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Finding the Fourth Proportional to 68,019.54, 102,029.19 and 18,099.65

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Solution

The fourth proportional to 68,019.54, 102,029.19 and 18,099.65 is: 27,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,019.54 : 102,029.19 = 18,099.65 : x
  2. Step 2: Convert to fraction form
    68,019.54/102,029.19 = 18,099.65/x
  3. Step 3: Cross multiply
    68,019.54x = 102,029.19 × 18,099.65
  4. Step 4: Simplify right side
    68,019.54x = 1,846,692,628.78
  5. Step 5: Solve for x
    x = 1,846,692,628.78/68,019.54
  6. Step 6: Final answer
    x = 27,149.44

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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.