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Finding the Fourth Proportional to 57,289.68, 85,963.68 and 26,120.88

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Solution

The fourth proportional to 57,289.68, 85,963.68 and 26,120.88 is: 39,194.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.68 : 85,963.68 = 26,120.88 : x
  2. Step 2: Convert to fraction form
    57,289.68/85,963.68 = 26,120.88/x
  3. Step 3: Cross multiply
    57,289.68x = 85,963.68 × 26,120.88
  4. Step 4: Simplify right side
    57,289.68x = 2,245,446,969.64
  5. Step 5: Solve for x
    x = 2,245,446,969.64/57,289.68
  6. Step 6: Final answer
    x = 39,194.62

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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.