Home / 56,471.57-77,930.21-30,976.73

Finding the Fourth Proportional to 56,471.57, 77,930.21 and 30,976.73

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Solution

The fourth proportional to 56,471.57, 77,930.21 and 30,976.73 is: 42,747.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,471.57 : 77,930.21 = 30,976.73 : x
  2. Step 2: Convert to fraction form
    56,471.57/77,930.21 = 30,976.73/x
  3. Step 3: Cross multiply
    56,471.57x = 77,930.21 × 30,976.73
  4. Step 4: Simplify right side
    56,471.57x = 2,414,023,097.60
  5. Step 5: Solve for x
    x = 2,414,023,097.60/56,471.57
  6. Step 6: Final answer
    x = 42,747.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.