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Finding the Fourth Proportional to 33,300.40, 49,885.80 and 20,113.60

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Solution

The fourth proportional to 33,300.40, 49,885.80 and 20,113.60 is: 30,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,300.40 : 49,885.80 = 20,113.60 : x
  2. Step 2: Convert to fraction form
    33,300.40/49,885.80 = 20,113.60/x
  3. Step 3: Cross multiply
    33,300.40x = 49,885.80 × 20,113.60
  4. Step 4: Simplify right side
    33,300.40x = 1,003,383,026.88
  5. Step 5: Solve for x
    x = 1,003,383,026.88/33,300.40
  6. Step 6: Final answer
    x = 30,131.26

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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.