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Finding the Fourth Proportional to 33,100.90, 45,678.08 and 18,951

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Solution

The fourth proportional to 33,100.90, 45,678.08 and 18,951 is: 26,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,100.90 : 45,678.08 = 18,951 : x
  2. Step 2: Convert to fraction form
    33,100.90/45,678.08 = 18,951/x
  3. Step 3: Cross multiply
    33,100.90x = 45,678.08 × 18,951
  4. Step 4: Simplify right side
    33,100.90x = 865,645,294.08
  5. Step 5: Solve for x
    x = 865,645,294.08/33,100.90
  6. Step 6: Final answer
    x = 26,151.71

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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.