Home / 276,836.87-415,255.43-77,162.42

Finding the Fourth Proportional to 276,836.87, 415,255.43 and 77,162.42

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Solution

The fourth proportional to 276,836.87, 415,255.43 and 77,162.42 is: 115,743.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,836.87 : 415,255.43 = 77,162.42 : x
  2. Step 2: Convert to fraction form
    276,836.87/415,255.43 = 77,162.42/x
  3. Step 3: Cross multiply
    276,836.87x = 415,255.43 × 77,162.42
  4. Step 4: Simplify right side
    276,836.87x = 32,042,112,013.57
  5. Step 5: Solve for x
    x = 32,042,112,013.57/276,836.87
  6. Step 6: Final answer
    x = 115,743.66

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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.