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Finding the Fourth Proportional to 66,489.15, 99,650.55 and 33,218.55

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Solution

The fourth proportional to 66,489.15, 99,650.55 and 33,218.55 is: 49,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,489.15 : 99,650.55 = 33,218.55 : x
  2. Step 2: Convert to fraction form
    66,489.15/99,650.55 = 33,218.55/x
  3. Step 3: Cross multiply
    66,489.15x = 99,650.55 × 33,218.55
  4. Step 4: Simplify right side
    66,489.15x = 3,310,246,777.70
  5. Step 5: Solve for x
    x = 3,310,246,777.70/66,489.15
  6. Step 6: Final answer
    x = 49,786.27

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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.