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Finding the Fourth Proportional to 51,007.70, 76,511.55 and 27,679.70

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Solution

The fourth proportional to 51,007.70, 76,511.55 and 27,679.70 is: 41,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,007.70 : 76,511.55 = 27,679.70 : x
  2. Step 2: Convert to fraction form
    51,007.70/76,511.55 = 27,679.70/x
  3. Step 3: Cross multiply
    51,007.70x = 76,511.55 × 27,679.70
  4. Step 4: Simplify right side
    51,007.70x = 2,117,816,750.54
  5. Step 5: Solve for x
    x = 2,117,816,750.54/51,007.70
  6. Step 6: Final answer
    x = 41,519.55

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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.