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Finding the Fourth Proportional to 54,571.79, 81,857.72 and 17,131.70

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Solution

The fourth proportional to 54,571.79, 81,857.72 and 17,131.70 is: 25,697.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,571.79 : 81,857.72 = 17,131.70 : x
  2. Step 2: Convert to fraction form
    54,571.79/81,857.72 = 17,131.70/x
  3. Step 3: Cross multiply
    54,571.79x = 81,857.72 × 17,131.70
  4. Step 4: Simplify right side
    54,571.79x = 1,402,362,149.20
  5. Step 5: Solve for x
    x = 1,402,362,149.20/54,571.79
  6. Step 6: Final answer
    x = 25,697.56

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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.