Home / 82,865.72-124,299.84-20,536.28

Finding the Fourth Proportional to 82,865.72, 124,299.84 and 20,536.28

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Solution

The fourth proportional to 82,865.72, 124,299.84 and 20,536.28 is: 30,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,865.72 : 124,299.84 = 20,536.28 : x
  2. Step 2: Convert to fraction form
    82,865.72/124,299.84 = 20,536.28/x
  3. Step 3: Cross multiply
    82,865.72x = 124,299.84 × 20,536.28
  4. Step 4: Simplify right side
    82,865.72x = 2,552,656,318.20
  5. Step 5: Solve for x
    x = 2,552,656,318.20/82,865.72
  6. Step 6: Final answer
    x = 30,804.73

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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.