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Finding the Fourth Proportional to 57,469.30, 86,176.16 and 20,028.48

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Solution

The fourth proportional to 57,469.30, 86,176.16 and 20,028.48 is: 30,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,469.30 : 86,176.16 = 20,028.48 : x
  2. Step 2: Convert to fraction form
    57,469.30/86,176.16 = 20,028.48/x
  3. Step 3: Cross multiply
    57,469.30x = 86,176.16 × 20,028.48
  4. Step 4: Simplify right side
    57,469.30x = 1,725,977,497.04
  5. Step 5: Solve for x
    x = 1,725,977,497.04/57,469.30
  6. Step 6: Final answer
    x = 30,033.03

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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.