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Finding the Fourth Proportional to 66,730.80, 100,071.90 and 33,439.80

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Solution

The fourth proportional to 66,730.80, 100,071.90 and 33,439.80 is: 50,147.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,730.80 : 100,071.90 = 33,439.80 : x
  2. Step 2: Convert to fraction form
    66,730.80/100,071.90 = 33,439.80/x
  3. Step 3: Cross multiply
    66,730.80x = 100,071.90 × 33,439.80
  4. Step 4: Simplify right side
    66,730.80x = 3,346,384,321.62
  5. Step 5: Solve for x
    x = 3,346,384,321.62/66,730.80
  6. Step 6: Final answer
    x = 50,147.52

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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.