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Finding the Fourth Proportional to 73,121.40, 109,649.70 and 33,690.60

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Solution

The fourth proportional to 73,121.40, 109,649.70 and 33,690.60 is: 50,520.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,121.40 : 109,649.70 = 33,690.60 : x
  2. Step 2: Convert to fraction form
    73,121.40/109,649.70 = 33,690.60/x
  3. Step 3: Cross multiply
    73,121.40x = 109,649.70 × 33,690.60
  4. Step 4: Simplify right side
    73,121.40x = 3,694,164,182.82
  5. Step 5: Solve for x
    x = 3,694,164,182.82/73,121.40
  6. Step 6: Final answer
    x = 50,520.97

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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.