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Finding the Fourth Proportional to 73,785, 101,823.66 and 40,251

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Solution

The fourth proportional to 73,785, 101,823.66 and 40,251 is: 55,546.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,785 : 101,823.66 = 40,251 : x
  2. Step 2: Convert to fraction form
    73,785/101,823.66 = 40,251/x
  3. Step 3: Cross multiply
    73,785x = 101,823.66 × 40,251
  4. Step 4: Simplify right side
    73,785x = 4,098,504,138.66
  5. Step 5: Solve for x
    x = 4,098,504,138.66/73,785
  6. Step 6: Final answer
    x = 55,546.58

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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.