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Finding the Fourth Proportional to 69,241.20, 103,861.78 and 21,889.51

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Solution

The fourth proportional to 69,241.20, 103,861.78 and 21,889.51 is: 32,834.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,241.20 : 103,861.78 = 21,889.51 : x
  2. Step 2: Convert to fraction form
    69,241.20/103,861.78 = 21,889.51/x
  3. Step 3: Cross multiply
    69,241.20x = 103,861.78 × 21,889.51
  4. Step 4: Simplify right side
    69,241.20x = 2,273,483,157.55
  5. Step 5: Solve for x
    x = 2,273,483,157.55/69,241.20
  6. Step 6: Final answer
    x = 32,834.26

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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.