Home / 68,182.91-102,280.26-20,808.66

Finding the Fourth Proportional to 68,182.91, 102,280.26 and 20,808.66

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Solution

The fourth proportional to 68,182.91, 102,280.26 and 20,808.66 is: 31,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,182.91 : 102,280.26 = 20,808.66 : x
  2. Step 2: Convert to fraction form
    68,182.91/102,280.26 = 20,808.66/x
  3. Step 3: Cross multiply
    68,182.91x = 102,280.26 × 20,808.66
  4. Step 4: Simplify right side
    68,182.91x = 2,128,315,155.05
  5. Step 5: Solve for x
    x = 2,128,315,155.05/68,182.91
  6. Step 6: Final answer
    x = 31,214.79

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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.