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Finding the Fourth Proportional to 68,855.85, 103,284.24 and 18,941.22

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Solution

The fourth proportional to 68,855.85, 103,284.24 and 18,941.22 is: 28,411.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855.85 : 103,284.24 = 18,941.22 : x
  2. Step 2: Convert to fraction form
    68,855.85/103,284.24 = 18,941.22/x
  3. Step 3: Cross multiply
    68,855.85x = 103,284.24 × 18,941.22
  4. Step 4: Simplify right side
    68,855.85x = 1,956,329,512.37
  5. Step 5: Solve for x
    x = 1,956,329,512.37/68,855.85
  6. Step 6: Final answer
    x = 28,411.96

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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.