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Finding the Fourth Proportional to 69,261.49, 103,898.13 and 21,863.90

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Solution

The fourth proportional to 69,261.49, 103,898.13 and 21,863.90 is: 32,797.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,261.49 : 103,898.13 = 21,863.90 : x
  2. Step 2: Convert to fraction form
    69,261.49/103,898.13 = 21,863.90/x
  3. Step 3: Cross multiply
    69,261.49x = 103,898.13 × 21,863.90
  4. Step 4: Simplify right side
    69,261.49x = 2,271,618,242.52
  5. Step 5: Solve for x
    x = 2,271,618,242.52/69,261.49
  6. Step 6: Final answer
    x = 32,797.71

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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.