Home / 81,629.08-122,432.10-26,217.88

Finding the Fourth Proportional to 81,629.08, 122,432.10 and 26,217.88

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Solution

The fourth proportional to 81,629.08, 122,432.10 and 26,217.88 is: 39,323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.08 : 122,432.10 = 26,217.88 : x
  2. Step 2: Convert to fraction form
    81,629.08/122,432.10 = 26,217.88/x
  3. Step 3: Cross multiply
    81,629.08x = 122,432.10 × 26,217.88
  4. Step 4: Simplify right side
    81,629.08x = 3,209,910,105.95
  5. Step 5: Solve for x
    x = 3,209,910,105.95/81,629.08
  6. Step 6: Final answer
    x = 39,323.12

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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.