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Finding the Fourth Proportional to 66,913.58, 100,361.12 and 36,983.12

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Solution

The fourth proportional to 66,913.58, 100,361.12 and 36,983.12 is: 55,469.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,913.58 : 100,361.12 = 36,983.12 : x
  2. Step 2: Convert to fraction form
    66,913.58/100,361.12 = 36,983.12/x
  3. Step 3: Cross multiply
    66,913.58x = 100,361.12 × 36,983.12
  4. Step 4: Simplify right side
    66,913.58x = 3,711,666,657.57
  5. Step 5: Solve for x
    x = 3,711,666,657.57/66,913.58
  6. Step 6: Final answer
    x = 55,469.56

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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.