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Finding the Fourth Proportional to 54,171, 74,757.42 and 30,301.74

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Solution

The fourth proportional to 54,171, 74,757.42 and 30,301.74 is: 41,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,171 : 74,757.42 = 30,301.74 : x
  2. Step 2: Convert to fraction form
    54,171/74,757.42 = 30,301.74/x
  3. Step 3: Cross multiply
    54,171x = 74,757.42 × 30,301.74
  4. Step 4: Simplify right side
    54,171x = 2,265,279,903.91
  5. Step 5: Solve for x
    x = 2,265,279,903.91/54,171
  6. Step 6: Final answer
    x = 41,817.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.