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Finding the Fourth Proportional to 128,028.52, 192,046.29 and 34,534

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Solution

The fourth proportional to 128,028.52, 192,046.29 and 34,534 is: 51,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.52 : 192,046.29 = 34,534 : x
  2. Step 2: Convert to fraction form
    128,028.52/192,046.29 = 34,534/x
  3. Step 3: Cross multiply
    128,028.52x = 192,046.29 × 34,534
  4. Step 4: Simplify right side
    128,028.52x = 6,632,126,578.86
  5. Step 5: Solve for x
    x = 6,632,126,578.86/128,028.52
  6. Step 6: Final answer
    x = 51,801.95

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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.