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Finding the Fourth Proportional to 91,578.58, 137,201.77 and 67,622.19

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Solution

The fourth proportional to 91,578.58, 137,201.77 and 67,622.19 is: 101,310.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.58 : 137,201.77 = 67,622.19 : x
  2. Step 2: Convert to fraction form
    91,578.58/137,201.77 = 67,622.19/x
  3. Step 3: Cross multiply
    91,578.58x = 137,201.77 × 67,622.19
  4. Step 4: Simplify right side
    91,578.58x = 9,277,884,120.68
  5. Step 5: Solve for x
    x = 9,277,884,120.68/91,578.58
  6. Step 6: Final answer
    x = 101,310.63

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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.