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Finding the Fourth Proportional to 72,657.10, 108,949.20 and 33,169.60

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Solution

The fourth proportional to 72,657.10, 108,949.20 and 33,169.60 is: 49,737.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.10 : 108,949.20 = 33,169.60 : x
  2. Step 2: Convert to fraction form
    72,657.10/108,949.20 = 33,169.60/x
  3. Step 3: Cross multiply
    72,657.10x = 108,949.20 × 33,169.60
  4. Step 4: Simplify right side
    72,657.10x = 3,613,801,384.32
  5. Step 5: Solve for x
    x = 3,613,801,384.32/72,657.10
  6. Step 6: Final answer
    x = 49,737.76

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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.