Home / 81,485.43-122,228.25-22,321.61

Finding the Fourth Proportional to 81,485.43, 122,228.25 and 22,321.61

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Solution

The fourth proportional to 81,485.43, 122,228.25 and 22,321.61 is: 33,482.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.43 : 122,228.25 = 22,321.61 : x
  2. Step 2: Convert to fraction form
    81,485.43/122,228.25 = 22,321.61/x
  3. Step 3: Cross multiply
    81,485.43x = 122,228.25 × 22,321.61
  4. Step 4: Simplify right side
    81,485.43x = 2,728,331,215.87
  5. Step 5: Solve for x
    x = 2,728,331,215.87/81,485.43
  6. Step 6: Final answer
    x = 33,482.44

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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.