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Finding the Fourth Proportional to 51,248.70, 76,849.97 and 21,651.30

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Solution

The fourth proportional to 51,248.70, 76,849.97 and 21,651.30 is: 32,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,248.70 : 76,849.97 = 21,651.30 : x
  2. Step 2: Convert to fraction form
    51,248.70/76,849.97 = 21,651.30/x
  3. Step 3: Cross multiply
    51,248.70x = 76,849.97 × 21,651.30
  4. Step 4: Simplify right side
    51,248.70x = 1,663,901,647.20
  5. Step 5: Solve for x
    x = 1,663,901,647.20/51,248.70
  6. Step 6: Final answer
    x = 32,467.20

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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.