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Finding the Fourth Proportional to 38,542.40, 57,813.60 and 25,409.60

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Solution

The fourth proportional to 38,542.40, 57,813.60 and 25,409.60 is: 38,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,542.40 : 57,813.60 = 25,409.60 : x
  2. Step 2: Convert to fraction form
    38,542.40/57,813.60 = 25,409.60/x
  3. Step 3: Cross multiply
    38,542.40x = 57,813.60 × 25,409.60
  4. Step 4: Simplify right side
    38,542.40x = 1,469,020,450.56
  5. Step 5: Solve for x
    x = 1,469,020,450.56/38,542.40
  6. Step 6: Final answer
    x = 38,114.40

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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.