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Finding the Fourth Proportional to 33,181.90, 49,655.90 and 20,707.79

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Solution

The fourth proportional to 33,181.90, 49,655.90 and 20,707.79 is: 30,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,181.90 : 49,655.90 = 20,707.79 : x
  2. Step 2: Convert to fraction form
    33,181.90/49,655.90 = 20,707.79/x
  3. Step 3: Cross multiply
    33,181.90x = 49,655.90 × 20,707.79
  4. Step 4: Simplify right side
    33,181.90x = 1,028,263,752.95
  5. Step 5: Solve for x
    x = 1,028,263,752.95/33,181.90
  6. Step 6: Final answer
    x = 30,988.70

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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.