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Finding the Fourth Proportional to 67,081.67, 100,623.03 and 19,697.51

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Solution

The fourth proportional to 67,081.67, 100,623.03 and 19,697.51 is: 29,546.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,081.67 : 100,623.03 = 19,697.51 : x
  2. Step 2: Convert to fraction form
    67,081.67/100,623.03 = 19,697.51/x
  3. Step 3: Cross multiply
    67,081.67x = 100,623.03 × 19,697.51
  4. Step 4: Simplify right side
    67,081.67x = 1,982,023,317.35
  5. Step 5: Solve for x
    x = 1,982,023,317.35/67,081.67
  6. Step 6: Final answer
    x = 29,546.42

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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.