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Finding the Fourth Proportional to 33,107, 45,687.66 and 21,929

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Solution

The fourth proportional to 33,107, 45,687.66 and 21,929 is: 30,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,107 : 45,687.66 = 21,929 : x
  2. Step 2: Convert to fraction form
    33,107/45,687.66 = 21,929/x
  3. Step 3: Cross multiply
    33,107x = 45,687.66 × 21,929
  4. Step 4: Simplify right side
    33,107x = 1,001,884,696.14
  5. Step 5: Solve for x
    x = 1,001,884,696.14/33,107
  6. Step 6: Final answer
    x = 30,262.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.