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Finding the Fourth Proportional to 64,388.44, 96,591.57 and 20,018.80

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Solution

The fourth proportional to 64,388.44, 96,591.57 and 20,018.80 is: 30,030.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.44 : 96,591.57 = 20,018.80 : x
  2. Step 2: Convert to fraction form
    64,388.44/96,591.57 = 20,018.80/x
  3. Step 3: Cross multiply
    64,388.44x = 96,591.57 × 20,018.80
  4. Step 4: Simplify right side
    64,388.44x = 1,933,647,321.52
  5. Step 5: Solve for x
    x = 1,933,647,321.52/64,388.44
  6. Step 6: Final answer
    x = 30,030.97

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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.