Home / 82,545.36-123,818.58-20,215.86

Finding the Fourth Proportional to 82,545.36, 123,818.58 and 20,215.86

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Solution

The fourth proportional to 82,545.36, 123,818.58 and 20,215.86 is: 30,323.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,545.36 : 123,818.58 = 20,215.86 : x
  2. Step 2: Convert to fraction form
    82,545.36/123,818.58 = 20,215.86/x
  3. Step 3: Cross multiply
    82,545.36x = 123,818.58 × 20,215.86
  4. Step 4: Simplify right side
    82,545.36x = 2,503,099,078.68
  5. Step 5: Solve for x
    x = 2,503,099,078.68/82,545.36
  6. Step 6: Final answer
    x = 30,323.92

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1.5x scale

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.