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Finding the Fourth Proportional to 67,839.22, 101,763.68 and 17,918.81

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Solution

The fourth proportional to 67,839.22, 101,763.68 and 17,918.81 is: 26,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,839.22 : 101,763.68 = 17,918.81 : x
  2. Step 2: Convert to fraction form
    67,839.22/101,763.68 = 17,918.81/x
  3. Step 3: Cross multiply
    67,839.22x = 101,763.68 × 17,918.81
  4. Step 4: Simplify right side
    67,839.22x = 1,823,484,046.82
  5. Step 5: Solve for x
    x = 1,823,484,046.82/67,839.22
  6. Step 6: Final answer
    x = 26,879.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.