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Finding the Fourth Proportional to 69,211.48, 103,807.36 and 21,820.44

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Solution

The fourth proportional to 69,211.48, 103,807.36 and 21,820.44 is: 32,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,211.48 : 103,807.36 = 21,820.44 : x
  2. Step 2: Convert to fraction form
    69,211.48/103,807.36 = 21,820.44/x
  3. Step 3: Cross multiply
    69,211.48x = 103,807.36 × 21,820.44
  4. Step 4: Simplify right side
    69,211.48x = 2,265,122,270.44
  5. Step 5: Solve for x
    x = 2,265,122,270.44/69,211.48
  6. Step 6: Final answer
    x = 32,727.55

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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.