Home / 54,072.78-81,111.40-18,558.50

Finding the Fourth Proportional to 54,072.78, 81,111.40 and 18,558.50

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Solution

The fourth proportional to 54,072.78, 81,111.40 and 18,558.50 is: 27,838.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,072.78 : 81,111.40 = 18,558.50 : x
  2. Step 2: Convert to fraction form
    54,072.78/81,111.40 = 18,558.50/x
  3. Step 3: Cross multiply
    54,072.78x = 81,111.40 × 18,558.50
  4. Step 4: Simplify right side
    54,072.78x = 1,505,305,464.95
  5. Step 5: Solve for x
    x = 1,505,305,464.95/54,072.78
  6. Step 6: Final answer
    x = 27,838.51

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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.