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Finding the Fourth Proportional to 73,137.38, 109,831.14 and 45,222.38

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Solution

The fourth proportional to 73,137.38, 109,831.14 and 45,222.38 is: 67,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.38 : 109,831.14 = 45,222.38 : x
  2. Step 2: Convert to fraction form
    73,137.38/109,831.14 = 45,222.38/x
  3. Step 3: Cross multiply
    73,137.38x = 109,831.14 × 45,222.38
  4. Step 4: Simplify right side
    73,137.38x = 4,966,825,102.72
  5. Step 5: Solve for x
    x = 4,966,825,102.72/73,137.38
  6. Step 6: Final answer
    x = 67,910.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.