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Finding the Fourth Proportional to 101,049.50, 139,446.44 and 55,731.69

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Solution

The fourth proportional to 101,049.50, 139,446.44 and 55,731.69 is: 76,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,049.50 : 139,446.44 = 55,731.69 : x
  2. Step 2: Convert to fraction form
    101,049.50/139,446.44 = 55,731.69/x
  3. Step 3: Cross multiply
    101,049.50x = 139,446.44 × 55,731.69
  4. Step 4: Simplify right side
    101,049.50x = 7,771,585,765.68
  5. Step 5: Solve for x
    x = 7,771,585,765.68/101,049.50
  6. Step 6: Final answer
    x = 76,908.70

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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.