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Finding the Fourth Proportional to 81,387.99, 122,081.99 and 22,222.35

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Solution

The fourth proportional to 81,387.99, 122,081.99 and 22,222.35 is: 33,333.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387.99 : 122,081.99 = 22,222.35 : x
  2. Step 2: Convert to fraction form
    81,387.99/122,081.99 = 22,222.35/x
  3. Step 3: Cross multiply
    81,387.99x = 122,081.99 × 22,222.35
  4. Step 4: Simplify right side
    81,387.99x = 2,712,948,599.36
  5. Step 5: Solve for x
    x = 2,712,948,599.36/81,387.99
  6. Step 6: Final answer
    x = 33,333.53

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Similar ratio
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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.