Home / 68,246.55-102,351.60-20,861.55

Finding the Fourth Proportional to 68,246.55, 102,351.60 and 20,861.55

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Solution

The fourth proportional to 68,246.55, 102,351.60 and 20,861.55 is: 31,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,246.55 : 102,351.60 = 20,861.55 : x
  2. Step 2: Convert to fraction form
    68,246.55/102,351.60 = 20,861.55/x
  3. Step 3: Cross multiply
    68,246.55x = 102,351.60 × 20,861.55
  4. Step 4: Simplify right side
    68,246.55x = 2,135,213,020.98
  5. Step 5: Solve for x
    x = 2,135,213,020.98/68,246.55
  6. Step 6: Final answer
    x = 31,286.75

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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.