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Finding the Fourth Proportional to 66,968.72, 100,455.15 and 33,690.14

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Solution

The fourth proportional to 66,968.72, 100,455.15 and 33,690.14 is: 50,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,968.72 : 100,455.15 = 33,690.14 : x
  2. Step 2: Convert to fraction form
    66,968.72/100,455.15 = 33,690.14/x
  3. Step 3: Cross multiply
    66,968.72x = 100,455.15 × 33,690.14
  4. Step 4: Simplify right side
    66,968.72x = 3,384,348,067.22
  5. Step 5: Solve for x
    x = 3,384,348,067.22/66,968.72
  6. Step 6: Final answer
    x = 50,536.25

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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.