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Finding the Fourth Proportional to 85,967.82, 128,926.80 and 36,046.62

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Solution

The fourth proportional to 85,967.82, 128,926.80 and 36,046.62 is: 54,059.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,967.82 : 128,926.80 = 36,046.62 : x
  2. Step 2: Convert to fraction form
    85,967.82/128,926.80 = 36,046.62/x
  3. Step 3: Cross multiply
    85,967.82x = 128,926.80 × 36,046.62
  4. Step 4: Simplify right side
    85,967.82x = 4,647,375,367.42
  5. Step 5: Solve for x
    x = 4,647,375,367.42/85,967.82
  6. Step 6: Final answer
    x = 54,059.48

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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.