Home / 81,717.75-122,561.91-21,746.52

Finding the Fourth Proportional to 81,717.75, 122,561.91 and 21,746.52

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Solution

The fourth proportional to 81,717.75, 122,561.91 and 21,746.52 is: 32,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.75 : 122,561.91 = 21,746.52 : x
  2. Step 2: Convert to fraction form
    81,717.75/122,561.91 = 21,746.52/x
  3. Step 3: Cross multiply
    81,717.75x = 122,561.91 × 21,746.52
  4. Step 4: Simplify right side
    81,717.75x = 2,665,295,027.05
  5. Step 5: Solve for x
    x = 2,665,295,027.05/81,717.75
  6. Step 6: Final answer
    x = 32,615.86

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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.