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Finding the Fourth Proportional to 81,588.61, 122,379.83 and 22,422.74

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Solution

The fourth proportional to 81,588.61, 122,379.83 and 22,422.74 is: 33,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,588.61 : 122,379.83 = 22,422.74 : x
  2. Step 2: Convert to fraction form
    81,588.61/122,379.83 = 22,422.74/x
  3. Step 3: Cross multiply
    81,588.61x = 122,379.83 × 22,422.74
  4. Step 4: Simplify right side
    81,588.61x = 2,744,090,469.41
  5. Step 5: Solve for x
    x = 2,744,090,469.41/81,588.61
  6. Step 6: Final answer
    x = 33,633.26

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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.