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Finding the Fourth Proportional to 85,049.82, 127,532.82 and 28,869.42

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Solution

The fourth proportional to 85,049.82, 127,532.82 and 28,869.42 is: 43,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,049.82 : 127,532.82 = 28,869.42 : x
  2. Step 2: Convert to fraction form
    85,049.82/127,532.82 = 28,869.42/x
  3. Step 3: Cross multiply
    85,049.82x = 127,532.82 × 28,869.42
  4. Step 4: Simplify right side
    85,049.82x = 3,681,798,544.36
  5. Step 5: Solve for x
    x = 3,681,798,544.36/85,049.82
  6. Step 6: Final answer
    x = 43,289.90

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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.