Home / 90,081.06-124,309.68-49,793.78

Finding the Fourth Proportional to 90,081.06, 124,309.68 and 49,793.78

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Solution

The fourth proportional to 90,081.06, 124,309.68 and 49,793.78 is: 68,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,081.06 : 124,309.68 = 49,793.78 : x
  2. Step 2: Convert to fraction form
    90,081.06/124,309.68 = 49,793.78/x
  3. Step 3: Cross multiply
    90,081.06x = 124,309.68 × 49,793.78
  4. Step 4: Simplify right side
    90,081.06x = 6,189,848,857.79
  5. Step 5: Solve for x
    x = 6,189,848,857.79/90,081.06
  6. Step 6: Final answer
    x = 68,714.21

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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.