Home / 81,730.85-122,596.04-21,759.32

Finding the Fourth Proportional to 81,730.85, 122,596.04 and 21,759.32

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Solution

The fourth proportional to 81,730.85, 122,596.04 and 21,759.32 is: 32,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,730.85 : 122,596.04 = 21,759.32 : x
  2. Step 2: Convert to fraction form
    81,730.85/122,596.04 = 21,759.32/x
  3. Step 3: Cross multiply
    81,730.85x = 122,596.04 × 21,759.32
  4. Step 4: Simplify right side
    81,730.85x = 2,667,605,743.32
  5. Step 5: Solve for x
    x = 2,667,605,743.32/81,730.85
  6. Step 6: Final answer
    x = 32,638.91

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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.