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Finding the Fourth Proportional to 66,679.60, 100,019.40 and 41,747.80

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Solution

The fourth proportional to 66,679.60, 100,019.40 and 41,747.80 is: 62,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,679.60 : 100,019.40 = 41,747.80 : x
  2. Step 2: Convert to fraction form
    66,679.60/100,019.40 = 41,747.80/x
  3. Step 3: Cross multiply
    66,679.60x = 100,019.40 × 41,747.80
  4. Step 4: Simplify right side
    66,679.60x = 4,175,589,907.32
  5. Step 5: Solve for x
    x = 4,175,589,907.32/66,679.60
  6. Step 6: Final answer
    x = 62,621.70

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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.