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Finding the Fourth Proportional to 66,906.72, 100,365.48 and 33,609.66

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Solution

The fourth proportional to 66,906.72, 100,365.48 and 33,609.66 is: 50,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.72 : 100,365.48 = 33,609.66 : x
  2. Step 2: Convert to fraction form
    66,906.72/100,365.48 = 33,609.66/x
  3. Step 3: Cross multiply
    66,906.72x = 100,365.48 × 33,609.66
  4. Step 4: Simplify right side
    66,906.72x = 3,373,249,658.54
  5. Step 5: Solve for x
    x = 3,373,249,658.54/66,906.72
  6. Step 6: Final answer
    x = 50,417.20

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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.