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Finding the Fourth Proportional to 34,456.20, 51,704.03 and 18,661.20

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Solution

The fourth proportional to 34,456.20, 51,704.03 and 18,661.20 is: 28,002.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,456.20 : 51,704.03 = 18,661.20 : x
  2. Step 2: Convert to fraction form
    34,456.20/51,704.03 = 18,661.20/x
  3. Step 3: Cross multiply
    34,456.20x = 51,704.03 × 18,661.20
  4. Step 4: Simplify right side
    34,456.20x = 964,859,244.64
  5. Step 5: Solve for x
    x = 964,859,244.64/34,456.20
  6. Step 6: Final answer
    x = 28,002.49

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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.