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Finding the Fourth Proportional to 55,226.70, 82,861.65 and 20,169.90

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Solution

The fourth proportional to 55,226.70, 82,861.65 and 20,169.90 is: 30,262.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,226.70 : 82,861.65 = 20,169.90 : x
  2. Step 2: Convert to fraction form
    55,226.70/82,861.65 = 20,169.90/x
  3. Step 3: Cross multiply
    55,226.70x = 82,861.65 × 20,169.90
  4. Step 4: Simplify right side
    55,226.70x = 1,671,311,194.34
  5. Step 5: Solve for x
    x = 1,671,311,194.34/55,226.70
  6. Step 6: Final answer
    x = 30,262.74

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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.