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Finding the Fourth Proportional to 55,163.76, 82,672.94 and 21,865.68

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Solution

The fourth proportional to 55,163.76, 82,672.94 and 21,865.68 is: 32,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,163.76 : 82,672.94 = 21,865.68 : x
  2. Step 2: Convert to fraction form
    55,163.76/82,672.94 = 21,865.68/x
  3. Step 3: Cross multiply
    55,163.76x = 82,672.94 × 21,865.68
  4. Step 4: Simplify right side
    55,163.76x = 1,807,700,050.70
  5. Step 5: Solve for x
    x = 1,807,700,050.70/55,163.76
  6. Step 6: Final answer
    x = 32,769.70

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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.