Home / 82,579.86-123,870.33-20,250.36

Finding the Fourth Proportional to 82,579.86, 123,870.33 and 20,250.36

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Solution

The fourth proportional to 82,579.86, 123,870.33 and 20,250.36 is: 30,375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,579.86 : 123,870.33 = 20,250.36 : x
  2. Step 2: Convert to fraction form
    82,579.86/123,870.33 = 20,250.36/x
  3. Step 3: Cross multiply
    82,579.86x = 123,870.33 × 20,250.36
  4. Step 4: Simplify right side
    82,579.86x = 2,508,418,775.82
  5. Step 5: Solve for x
    x = 2,508,418,775.82/82,579.86
  6. Step 6: Final answer
    x = 30,375.67

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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.