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Finding the Fourth Proportional to 69,040, 103,561.26 and 21,654.03

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Solution

The fourth proportional to 69,040, 103,561.26 and 21,654.03 is: 32,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,040 : 103,561.26 = 21,654.03 : x
  2. Step 2: Convert to fraction form
    69,040/103,561.26 = 21,654.03/x
  3. Step 3: Cross multiply
    69,040x = 103,561.26 × 21,654.03
  4. Step 4: Simplify right side
    69,040x = 2,242,518,630.88
  5. Step 5: Solve for x
    x = 2,242,518,630.88/69,040
  6. Step 6: Final answer
    x = 32,481.44

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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.