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Finding the Fourth Proportional to 71,951.87, 107,909.37 and 21,339.05

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Solution

The fourth proportional to 71,951.87, 107,909.37 and 21,339.05 is: 32,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,951.87 : 107,909.37 = 21,339.05 : x
  2. Step 2: Convert to fraction form
    71,951.87/107,909.37 = 21,339.05/x
  3. Step 3: Cross multiply
    71,951.87x = 107,909.37 × 21,339.05
  4. Step 4: Simplify right side
    71,951.87x = 2,302,682,902.35
  5. Step 5: Solve for x
    x = 2,302,682,902.35/71,951.87
  6. Step 6: Final answer
    x = 32,003.10

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1.5x scale

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.