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Finding the Fourth Proportional to 81,513.99, 122,262.79 and 22,355.61

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Solution

The fourth proportional to 81,513.99, 122,262.79 and 22,355.61 is: 33,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.99 : 122,262.79 = 22,355.61 : x
  2. Step 2: Convert to fraction form
    81,513.99/122,262.79 = 22,355.61/x
  3. Step 3: Cross multiply
    81,513.99x = 122,262.79 × 22,355.61
  4. Step 4: Simplify right side
    81,513.99x = 2,733,259,250.75
  5. Step 5: Solve for x
    x = 2,733,259,250.75/81,513.99
  6. Step 6: Final answer
    x = 33,531.17

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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.