Home / 81,729.48-122,594.04-21,757.97

Finding the Fourth Proportional to 81,729.48, 122,594.04 and 21,757.97

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Solution

The fourth proportional to 81,729.48, 122,594.04 and 21,757.97 is: 32,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,729.48 : 122,594.04 = 21,757.97 : x
  2. Step 2: Convert to fraction form
    81,729.48/122,594.04 = 21,757.97/x
  3. Step 3: Cross multiply
    81,729.48x = 122,594.04 × 21,757.97
  4. Step 4: Simplify right side
    81,729.48x = 2,667,397,444.50
  5. Step 5: Solve for x
    x = 2,667,397,444.50/81,729.48
  6. Step 6: Final answer
    x = 32,636.91

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1.5x scale

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.