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Finding the Fourth Proportional to 85,002.62, 127,476.79 and 28,063.87

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Solution

The fourth proportional to 85,002.62, 127,476.79 and 28,063.87 is: 42,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,002.62 : 127,476.79 = 28,063.87 : x
  2. Step 2: Convert to fraction form
    85,002.62/127,476.79 = 28,063.87/x
  3. Step 3: Cross multiply
    85,002.62x = 127,476.79 × 28,063.87
  4. Step 4: Simplify right side
    85,002.62x = 3,577,491,673.73
  5. Step 5: Solve for x
    x = 3,577,491,673.73/85,002.62
  6. Step 6: Final answer
    x = 42,086.84

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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.