Home / 89,390.34-123,361.77-49,107.78

Finding the Fourth Proportional to 89,390.34, 123,361.77 and 49,107.78

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Solution

The fourth proportional to 89,390.34, 123,361.77 and 49,107.78 is: 67,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,390.34 : 123,361.77 = 49,107.78 : x
  2. Step 2: Convert to fraction form
    89,390.34/123,361.77 = 49,107.78/x
  3. Step 3: Cross multiply
    89,390.34x = 123,361.77 × 49,107.78
  4. Step 4: Simplify right side
    89,390.34x = 6,058,022,661.57
  5. Step 5: Solve for x
    x = 6,058,022,661.57/89,390.34
  6. Step 6: Final answer
    x = 67,770.44

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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.