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Finding the Fourth Proportional to 66,452.78, 99,662.19 and 19,694.74

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Solution

The fourth proportional to 66,452.78, 99,662.19 and 19,694.74 is: 29,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452.78 : 99,662.19 = 19,694.74 : x
  2. Step 2: Convert to fraction form
    66,452.78/99,662.19 = 19,694.74/x
  3. Step 3: Cross multiply
    66,452.78x = 99,662.19 × 19,694.74
  4. Step 4: Simplify right side
    66,452.78x = 1,962,820,919.88
  5. Step 5: Solve for x
    x = 1,962,820,919.88/66,452.78
  6. Step 6: Final answer
    x = 29,537.08

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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.