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Finding the Fourth Proportional to 54,182.40, 81,241.20 and 27,938.40

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Solution

The fourth proportional to 54,182.40, 81,241.20 and 27,938.40 is: 41,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,182.40 : 81,241.20 = 27,938.40 : x
  2. Step 2: Convert to fraction form
    54,182.40/81,241.20 = 27,938.40/x
  3. Step 3: Cross multiply
    54,182.40x = 81,241.20 × 27,938.40
  4. Step 4: Simplify right side
    54,182.40x = 2,269,749,142.08
  5. Step 5: Solve for x
    x = 2,269,749,142.08/54,182.40
  6. Step 6: Final answer
    x = 41,890.89

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1.5x scale

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.