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Finding the Fourth Proportional to 57,490.63, 86,235.97 and 25,863.75

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Solution

The fourth proportional to 57,490.63, 86,235.97 and 25,863.75 is: 38,795.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,490.63 : 86,235.97 = 25,863.75 : x
  2. Step 2: Convert to fraction form
    57,490.63/86,235.97 = 25,863.75/x
  3. Step 3: Cross multiply
    57,490.63x = 86,235.97 × 25,863.75
  4. Step 4: Simplify right side
    57,490.63x = 2,230,385,569.09
  5. Step 5: Solve for x
    x = 2,230,385,569.09/57,490.63
  6. Step 6: Final answer
    x = 38,795.64

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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.