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Finding the Fourth Proportional to 66,127.80, 99,198.24 and 21,736.56

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Solution

The fourth proportional to 66,127.80, 99,198.24 and 21,736.56 is: 32,606.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,127.80 : 99,198.24 = 21,736.56 : x
  2. Step 2: Convert to fraction form
    66,127.80/99,198.24 = 21,736.56/x
  3. Step 3: Cross multiply
    66,127.80x = 99,198.24 × 21,736.56
  4. Step 4: Simplify right side
    66,127.80x = 2,156,228,495.65
  5. Step 5: Solve for x
    x = 2,156,228,495.65/66,127.80
  6. Step 6: Final answer
    x = 32,606.99

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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.