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Finding the Fourth Proportional to 68,247.01, 102,370.78 and 20,861.92

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Solution

The fourth proportional to 68,247.01, 102,370.78 and 20,861.92 is: 31,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,247.01 : 102,370.78 = 20,861.92 : x
  2. Step 2: Convert to fraction form
    68,247.01/102,370.78 = 20,861.92/x
  3. Step 3: Cross multiply
    68,247.01x = 102,370.78 × 20,861.92
  4. Step 4: Simplify right side
    68,247.01x = 2,135,651,022.70
  5. Step 5: Solve for x
    x = 2,135,651,022.70/68,247.01
  6. Step 6: Final answer
    x = 31,292.96

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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.