Home / 66,163.32-99,207.63-21,778.17

Finding the Fourth Proportional to 66,163.32, 99,207.63 and 21,778.17

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Solution

The fourth proportional to 66,163.32, 99,207.63 and 21,778.17 is: 32,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.32 : 99,207.63 = 21,778.17 : x
  2. Step 2: Convert to fraction form
    66,163.32/99,207.63 = 21,778.17/x
  3. Step 3: Cross multiply
    66,163.32x = 99,207.63 × 21,778.17
  4. Step 4: Simplify right side
    66,163.32x = 2,160,560,631.44
  5. Step 5: Solve for x
    x = 2,160,560,631.44/66,163.32
  6. Step 6: Final answer
    x = 32,654.96

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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.