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Finding the Fourth Proportional to 66,801.68, 100,202.20 and 16,881.88

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Solution

The fourth proportional to 66,801.68, 100,202.20 and 16,881.88 is: 25,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,801.68 : 100,202.20 = 16,881.88 : x
  2. Step 2: Convert to fraction form
    66,801.68/100,202.20 = 16,881.88/x
  3. Step 3: Cross multiply
    66,801.68x = 100,202.20 × 16,881.88
  4. Step 4: Simplify right side
    66,801.68x = 1,691,601,516.14
  5. Step 5: Solve for x
    x = 1,691,601,516.14/66,801.68
  6. Step 6: Final answer
    x = 25,322.74

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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.