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Finding the Fourth Proportional to 54,576, 81,889.92 and 17,640

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Solution

The fourth proportional to 54,576, 81,889.92 and 17,640 is: 26,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,576 : 81,889.92 = 17,640 : x
  2. Step 2: Convert to fraction form
    54,576/81,889.92 = 17,640/x
  3. Step 3: Cross multiply
    54,576x = 81,889.92 × 17,640
  4. Step 4: Simplify right side
    54,576x = 1,444,538,188.80
  5. Step 5: Solve for x
    x = 1,444,538,188.80/54,576
  6. Step 6: Final answer
    x = 26,468.38

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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.