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Finding the Fourth Proportional to 72,137.35, 108,217.65 and 22,217.43

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Solution

The fourth proportional to 72,137.35, 108,217.65 and 22,217.43 is: 33,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,137.35 : 108,217.65 = 22,217.43 : x
  2. Step 2: Convert to fraction form
    72,137.35/108,217.65 = 22,217.43/x
  3. Step 3: Cross multiply
    72,137.35x = 108,217.65 × 22,217.43
  4. Step 4: Simplify right side
    72,137.35x = 2,404,317,604.41
  5. Step 5: Solve for x
    x = 2,404,317,604.41/72,137.35
  6. Step 6: Final answer
    x = 33,329.72

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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.