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Finding the Fourth Proportional to 72,769, 100,425.90 and 44,108.44

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Solution

The fourth proportional to 72,769, 100,425.90 and 44,108.44 is: 60,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769 : 100,425.90 = 44,108.44 : x
  2. Step 2: Convert to fraction form
    72,769/100,425.90 = 44,108.44/x
  3. Step 3: Cross multiply
    72,769x = 100,425.90 × 44,108.44
  4. Step 4: Simplify right side
    72,769x = 4,429,629,784.60
  5. Step 5: Solve for x
    x = 4,429,629,784.60/72,769
  6. Step 6: Final answer
    x = 60,872.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.