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Finding the Fourth Proportional to 54,489.64, 81,717.18 and 17,545

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Solution

The fourth proportional to 54,489.64, 81,717.18 and 17,545 is: 26,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,489.64 : 81,717.18 = 17,545 : x
  2. Step 2: Convert to fraction form
    54,489.64/81,717.18 = 17,545/x
  3. Step 3: Cross multiply
    54,489.64x = 81,717.18 × 17,545
  4. Step 4: Simplify right side
    54,489.64x = 1,433,727,923.10
  5. Step 5: Solve for x
    x = 1,433,727,923.10/54,489.64
  6. Step 6: Final answer
    x = 26,311.94

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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.