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Finding the Fourth Proportional to 72,112.20, 108,165.87 and 32,641.71

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Solution

The fourth proportional to 72,112.20, 108,165.87 and 32,641.71 is: 48,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,112.20 : 108,165.87 = 32,641.71 : x
  2. Step 2: Convert to fraction form
    72,112.20/108,165.87 = 32,641.71/x
  3. Step 3: Cross multiply
    72,112.20x = 108,165.87 × 32,641.71
  4. Step 4: Simplify right side
    72,112.20x = 3,530,718,960.44
  5. Step 5: Solve for x
    x = 3,530,718,960.44/72,112.20
  6. Step 6: Final answer
    x = 48,961.47

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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.