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Finding the Fourth Proportional to 33,081.84, 45,664.92 and 21,907.44

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Solution

The fourth proportional to 33,081.84, 45,664.92 and 21,907.44 is: 30,240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,081.84 : 45,664.92 = 21,907.44 : x
  2. Step 2: Convert to fraction form
    33,081.84/45,664.92 = 21,907.44/x
  3. Step 3: Cross multiply
    33,081.84x = 45,664.92 × 21,907.44
  4. Step 4: Simplify right side
    33,081.84x = 1,000,401,495.00
  5. Step 5: Solve for x
    x = 1,000,401,495.00/33,081.84
  6. Step 6: Final answer
    x = 30,240.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.