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Finding the Fourth Proportional to 39,999.17, 55,198.88 and 21,850.14

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Solution

The fourth proportional to 39,999.17, 55,198.88 and 21,850.14 is: 30,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999.17 : 55,198.88 = 21,850.14 : x
  2. Step 2: Convert to fraction form
    39,999.17/55,198.88 = 21,850.14/x
  3. Step 3: Cross multiply
    39,999.17x = 55,198.88 × 21,850.14
  4. Step 4: Simplify right side
    39,999.17x = 1,206,103,146.59
  5. Step 5: Solve for x
    x = 1,206,103,146.59/39,999.17
  6. Step 6: Final answer
    x = 30,153.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.