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Finding the Fourth Proportional to 55,318.80, 82,921.50 and 21,993.78

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Solution

The fourth proportional to 55,318.80, 82,921.50 and 21,993.78 is: 32,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,318.80 : 82,921.50 = 21,993.78 : x
  2. Step 2: Convert to fraction form
    55,318.80/82,921.50 = 21,993.78/x
  3. Step 3: Cross multiply
    55,318.80x = 82,921.50 × 21,993.78
  4. Step 4: Simplify right side
    55,318.80x = 1,823,757,228.27
  5. Step 5: Solve for x
    x = 1,823,757,228.27/55,318.80
  6. Step 6: Final answer
    x = 32,968.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.