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Finding the Fourth Proportional to 69,015.76, 103,523.50 and 21,634.52

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Solution

The fourth proportional to 69,015.76, 103,523.50 and 21,634.52 is: 32,451.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,015.76 : 103,523.50 = 21,634.52 : x
  2. Step 2: Convert to fraction form
    69,015.76/103,523.50 = 21,634.52/x
  3. Step 3: Cross multiply
    69,015.76x = 103,523.50 × 21,634.52
  4. Step 4: Simplify right side
    69,015.76x = 2,239,681,231.22
  5. Step 5: Solve for x
    x = 2,239,681,231.22/69,015.76
  6. Step 6: Final answer
    x = 32,451.74

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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.