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Finding the Fourth Proportional to 64,694.87, 97,046.18 and 20,321.62

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Solution

The fourth proportional to 64,694.87, 97,046.18 and 20,321.62 is: 30,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,694.87 : 97,046.18 = 20,321.62 : x
  2. Step 2: Convert to fraction form
    64,694.87/97,046.18 = 20,321.62/x
  3. Step 3: Cross multiply
    64,694.87x = 97,046.18 × 20,321.62
  4. Step 4: Simplify right side
    64,694.87x = 1,972,135,324.39
  5. Step 5: Solve for x
    x = 1,972,135,324.39/64,694.87
  6. Step 6: Final answer
    x = 30,483.64

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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.