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Finding the Fourth Proportional to 57,273.40, 85,918.20 and 17,826.40

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Solution

The fourth proportional to 57,273.40, 85,918.20 and 17,826.40 is: 26,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,273.40 : 85,918.20 = 17,826.40 : x
  2. Step 2: Convert to fraction form
    57,273.40/85,918.20 = 17,826.40/x
  3. Step 3: Cross multiply
    57,273.40x = 85,918.20 × 17,826.40
  4. Step 4: Simplify right side
    57,273.40x = 1,531,612,200.48
  5. Step 5: Solve for x
    x = 1,531,612,200.48/57,273.40
  6. Step 6: Final answer
    x = 26,742.12

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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.