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Finding the Fourth Proportional to 139,040.49, 208,591.11 and 50,284.74

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Solution

The fourth proportional to 139,040.49, 208,591.11 and 50,284.74 is: 75,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,040.49 : 208,591.11 = 50,284.74 : x
  2. Step 2: Convert to fraction form
    139,040.49/208,591.11 = 50,284.74/x
  3. Step 3: Cross multiply
    139,040.49x = 208,591.11 × 50,284.74
  4. Step 4: Simplify right side
    139,040.49x = 10,488,949,732.66
  5. Step 5: Solve for x
    x = 10,488,949,732.66/139,040.49
  6. Step 6: Final answer
    x = 75,438.10

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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.