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Finding the Fourth Proportional to 68,797.25, 103,195.98 and 18,878.03

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Solution

The fourth proportional to 68,797.25, 103,195.98 and 18,878.03 is: 28,317.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,797.25 : 103,195.98 = 18,878.03 : x
  2. Step 2: Convert to fraction form
    68,797.25/103,195.98 = 18,878.03/x
  3. Step 3: Cross multiply
    68,797.25x = 103,195.98 × 18,878.03
  4. Step 4: Simplify right side
    68,797.25x = 1,948,136,290.34
  5. Step 5: Solve for x
    x = 1,948,136,290.34/68,797.25
  6. Step 6: Final answer
    x = 28,317.07

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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.