Home / 81,732.85-122,599.04-21,761.32

Finding the Fourth Proportional to 81,732.85, 122,599.04 and 21,761.32

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Solution

The fourth proportional to 81,732.85, 122,599.04 and 21,761.32 is: 32,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,732.85 : 122,599.04 = 21,761.32 : x
  2. Step 2: Convert to fraction form
    81,732.85/122,599.04 = 21,761.32/x
  3. Step 3: Cross multiply
    81,732.85x = 122,599.04 × 21,761.32
  4. Step 4: Simplify right side
    81,732.85x = 2,667,916,219.33
  5. Step 5: Solve for x
    x = 2,667,916,219.33/81,732.85
  6. Step 6: Final answer
    x = 32,641.91

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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.