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Finding the Fourth Proportional to 54,009, 81,010.06 and 20,268.36

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Solution

The fourth proportional to 54,009, 81,010.06 and 20,268.36 is: 30,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009 : 81,010.06 = 20,268.36 : x
  2. Step 2: Convert to fraction form
    54,009/81,010.06 = 20,268.36/x
  3. Step 3: Cross multiply
    54,009x = 81,010.06 × 20,268.36
  4. Step 4: Simplify right side
    54,009x = 1,641,941,059.70
  5. Step 5: Solve for x
    x = 1,641,941,059.70/54,009
  6. Step 6: Final answer
    x = 30,401.25

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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.