Home / 89,780.45-123,897.38-49,493.31

Finding the Fourth Proportional to 89,780.45, 123,897.38 and 49,493.31

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Solution

The fourth proportional to 89,780.45, 123,897.38 and 49,493.31 is: 68,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,780.45 : 123,897.38 = 49,493.31 : x
  2. Step 2: Convert to fraction form
    89,780.45/123,897.38 = 49,493.31/x
  3. Step 3: Cross multiply
    89,780.45x = 123,897.38 × 49,493.31
  4. Step 4: Simplify right side
    89,780.45x = 6,132,091,189.06
  5. Step 5: Solve for x
    x = 6,132,091,189.06/89,780.45
  6. Step 6: Final answer
    x = 68,300.97

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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.