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Finding the Fourth Proportional to 66,997.62, 100,483.44 and 20,239.56

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Solution

The fourth proportional to 66,997.62, 100,483.44 and 20,239.56 is: 30,355.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,997.62 : 100,483.44 = 20,239.56 : x
  2. Step 2: Convert to fraction form
    66,997.62/100,483.44 = 20,239.56/x
  3. Step 3: Cross multiply
    66,997.62x = 100,483.44 × 20,239.56
  4. Step 4: Simplify right side
    66,997.62x = 2,033,740,612.89
  5. Step 5: Solve for x
    x = 2,033,740,612.89/66,997.62
  6. Step 6: Final answer
    x = 30,355.42

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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.