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Finding the Fourth Proportional to 54,754.91, 82,133.03 and 21,490.64

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Solution

The fourth proportional to 54,754.91, 82,133.03 and 21,490.64 is: 32,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,754.91 : 82,133.03 = 21,490.64 : x
  2. Step 2: Convert to fraction form
    54,754.91/82,133.03 = 21,490.64/x
  3. Step 3: Cross multiply
    54,754.91x = 82,133.03 × 21,490.64
  4. Step 4: Simplify right side
    54,754.91x = 1,765,091,272.39
  5. Step 5: Solve for x
    x = 1,765,091,272.39/54,754.91
  6. Step 6: Final answer
    x = 32,236.22

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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.