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Finding the Fourth Proportional to 68,870, 103,295.30 and 22,116.80

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Solution

The fourth proportional to 68,870, 103,295.30 and 22,116.80 is: 33,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,870 : 103,295.30 = 22,116.80 : x
  2. Step 2: Convert to fraction form
    68,870/103,295.30 = 22,116.80/x
  3. Step 3: Cross multiply
    68,870x = 103,295.30 × 22,116.80
  4. Step 4: Simplify right side
    68,870x = 2,284,561,491.04
  5. Step 5: Solve for x
    x = 2,284,561,491.04/68,870
  6. Step 6: Final answer
    x = 33,172.08

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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.