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Finding the Fourth Proportional to 64,993.44, 89,697 and 39,493.92

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Solution

The fourth proportional to 64,993.44, 89,697 and 39,493.92 is: 54,505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,993.44 : 89,697 = 39,493.92 : x
  2. Step 2: Convert to fraction form
    64,993.44/89,697 = 39,493.92/x
  3. Step 3: Cross multiply
    64,993.44x = 89,697 × 39,493.92
  4. Step 4: Simplify right side
    64,993.44x = 3,542,486,142.24
  5. Step 5: Solve for x
    x = 3,542,486,142.24/64,993.44
  6. Step 6: Final answer
    x = 54,505.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.