Home / 89,780.70-123,805.30-59,161.78

Finding the Fourth Proportional to 89,780.70, 123,805.30 and 59,161.78

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Solution

The fourth proportional to 89,780.70, 123,805.30 and 59,161.78 is: 81,582.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,780.70 : 123,805.30 = 59,161.78 : x
  2. Step 2: Convert to fraction form
    89,780.70/123,805.30 = 59,161.78/x
  3. Step 3: Cross multiply
    89,780.70x = 123,805.30 × 59,161.78
  4. Step 4: Simplify right side
    89,780.70x = 7,324,541,921.43
  5. Step 5: Solve for x
    x = 7,324,541,921.43/89,780.70
  6. Step 6: Final answer
    x = 81,582.59

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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.