Home / 81,669.87-122,513.28-22,505.55

Finding the Fourth Proportional to 81,669.87, 122,513.28 and 22,505.55

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Solution

The fourth proportional to 81,669.87, 122,513.28 and 22,505.55 is: 33,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,669.87 : 122,513.28 = 22,505.55 : x
  2. Step 2: Convert to fraction form
    81,669.87/122,513.28 = 22,505.55/x
  3. Step 3: Cross multiply
    81,669.87x = 122,513.28 × 22,505.55
  4. Step 4: Simplify right side
    81,669.87x = 2,757,228,204.88
  5. Step 5: Solve for x
    x = 2,757,228,204.88/81,669.87
  6. Step 6: Final answer
    x = 33,760.65

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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.