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Finding the Fourth Proportional to 54,859.49, 82,239.96 and 19,790.95

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Solution

The fourth proportional to 54,859.49, 82,239.96 and 19,790.95 is: 29,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,859.49 : 82,239.96 = 19,790.95 : x
  2. Step 2: Convert to fraction form
    54,859.49/82,239.96 = 19,790.95/x
  3. Step 3: Cross multiply
    54,859.49x = 82,239.96 × 19,790.95
  4. Step 4: Simplify right side
    54,859.49x = 1,627,606,936.36
  5. Step 5: Solve for x
    x = 1,627,606,936.36/54,859.49
  6. Step 6: Final answer
    x = 29,668.65

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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.