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Finding the Fourth Proportional to 67,089, 100,636.92 and 17,169.51

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Solution

The fourth proportional to 67,089, 100,636.92 and 17,169.51 is: 25,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,089 : 100,636.92 = 17,169.51 : x
  2. Step 2: Convert to fraction form
    67,089/100,636.92 = 17,169.51/x
  3. Step 3: Cross multiply
    67,089x = 100,636.92 × 17,169.51
  4. Step 4: Simplify right side
    67,089x = 1,727,886,604.31
  5. Step 5: Solve for x
    x = 1,727,886,604.31/67,089
  6. Step 6: Final answer
    x = 25,755.14

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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.