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Finding the Fourth Proportional to 57,640.86, 86,515.20 and 35,497.44

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Solution

The fourth proportional to 57,640.86, 86,515.20 and 35,497.44 is: 53,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,640.86 : 86,515.20 = 35,497.44 : x
  2. Step 2: Convert to fraction form
    57,640.86/86,515.20 = 35,497.44/x
  3. Step 3: Cross multiply
    57,640.86x = 86,515.20 × 35,497.44
  4. Step 4: Simplify right side
    57,640.86x = 3,071,068,121.09
  5. Step 5: Solve for x
    x = 3,071,068,121.09/57,640.86
  6. Step 6: Final answer
    x = 53,279.36

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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.