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Finding the Fourth Proportional to 57,351.44, 86,039.11 and 28,904.38

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Solution

The fourth proportional to 57,351.44, 86,039.11 and 28,904.38 is: 43,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,351.44 : 86,039.11 = 28,904.38 : x
  2. Step 2: Convert to fraction form
    57,351.44/86,039.11 = 28,904.38/x
  3. Step 3: Cross multiply
    57,351.44x = 86,039.11 × 28,904.38
  4. Step 4: Simplify right side
    57,351.44x = 2,486,906,951.33
  5. Step 5: Solve for x
    x = 2,486,906,951.33/57,351.44
  6. Step 6: Final answer
    x = 43,362.59

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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.