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Finding the Fourth Proportional to 66,906.30, 100,335.15 and 33,615.30

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Solution

The fourth proportional to 66,906.30, 100,335.15 and 33,615.30 is: 50,410.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.30 : 100,335.15 = 33,615.30 : x
  2. Step 2: Convert to fraction form
    66,906.30/100,335.15 = 33,615.30/x
  3. Step 3: Cross multiply
    66,906.30x = 100,335.15 × 33,615.30
  4. Step 4: Simplify right side
    66,906.30x = 3,372,796,167.80
  5. Step 5: Solve for x
    x = 3,372,796,167.80/66,906.30
  6. Step 6: Final answer
    x = 50,410.74

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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.