Home / 55,729.92-76,906.24-30,579.20

Finding the Fourth Proportional to 55,729.92, 76,906.24 and 30,579.20

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Solution

The fourth proportional to 55,729.92, 76,906.24 and 30,579.20 is: 42,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,729.92 : 76,906.24 = 30,579.20 : x
  2. Step 2: Convert to fraction form
    55,729.92/76,906.24 = 30,579.20/x
  3. Step 3: Cross multiply
    55,729.92x = 76,906.24 × 30,579.20
  4. Step 4: Simplify right side
    55,729.92x = 2,351,731,294.21
  5. Step 5: Solve for x
    x = 2,351,731,294.21/55,729.92
  6. Step 6: Final answer
    x = 42,198.72

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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.