Home / 82,558.36-123,838.08-20,228.86

Finding the Fourth Proportional to 82,558.36, 123,838.08 and 20,228.86

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Solution

The fourth proportional to 82,558.36, 123,838.08 and 20,228.86 is: 30,343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,558.36 : 123,838.08 = 20,228.86 : x
  2. Step 2: Convert to fraction form
    82,558.36/123,838.08 = 20,228.86/x
  3. Step 3: Cross multiply
    82,558.36x = 123,838.08 × 20,228.86
  4. Step 4: Simplify right side
    82,558.36x = 2,505,103,182.99
  5. Step 5: Solve for x
    x = 2,505,103,182.99/82,558.36
  6. Step 6: Final answer
    x = 30,343.42

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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.