Home / 89,319.24-123,221.25-55,318.68

Finding the Fourth Proportional to 89,319.24, 123,221.25 and 55,318.68

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Solution

The fourth proportional to 89,319.24, 123,221.25 and 55,318.68 is: 76,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,319.24 : 123,221.25 = 55,318.68 : x
  2. Step 2: Convert to fraction form
    89,319.24/123,221.25 = 55,318.68/x
  3. Step 3: Cross multiply
    89,319.24x = 123,221.25 × 55,318.68
  4. Step 4: Simplify right side
    89,319.24x = 6,816,436,897.95
  5. Step 5: Solve for x
    x = 6,816,436,897.95/89,319.24
  6. Step 6: Final answer
    x = 76,315.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.