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Finding the Fourth Proportional to 89,697.69, 123,773.53 and 55,236.95

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Solution

The fourth proportional to 89,697.69, 123,773.53 and 55,236.95 is: 76,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,697.69 : 123,773.53 = 55,236.95 : x
  2. Step 2: Convert to fraction form
    89,697.69/123,773.53 = 55,236.95/x
  3. Step 3: Cross multiply
    89,697.69x = 123,773.53 × 55,236.95
  4. Step 4: Simplify right side
    89,697.69x = 6,836,872,287.93
  5. Step 5: Solve for x
    x = 6,836,872,287.93/89,697.69
  6. Step 6: Final answer
    x = 76,221.27

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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.