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Finding the Fourth Proportional to 66,901, 100,361.20 and 35,719.24

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Solution

The fourth proportional to 66,901, 100,361.20 and 35,719.24 is: 53,584.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,901 : 100,361.20 = 35,719.24 : x
  2. Step 2: Convert to fraction form
    66,901/100,361.20 = 35,719.24/x
  3. Step 3: Cross multiply
    66,901x = 100,361.20 × 35,719.24
  4. Step 4: Simplify right side
    66,901x = 3,584,825,789.49
  5. Step 5: Solve for x
    x = 3,584,825,789.49/66,901
  6. Step 6: Final answer
    x = 53,584.04

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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.