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Finding the Fourth Proportional to 68,379.20, 102,568.80 and 41,998.40

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Solution

The fourth proportional to 68,379.20, 102,568.80 and 41,998.40 is: 62,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.20 : 102,568.80 = 41,998.40 : x
  2. Step 2: Convert to fraction form
    68,379.20/102,568.80 = 41,998.40/x
  3. Step 3: Cross multiply
    68,379.20x = 102,568.80 × 41,998.40
  4. Step 4: Simplify right side
    68,379.20x = 4,307,725,489.92
  5. Step 5: Solve for x
    x = 4,307,725,489.92/68,379.20
  6. Step 6: Final answer
    x = 62,997.60

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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.