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Finding the Fourth Proportional to 33,261.40, 49,892.10 and 20,860.30

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Solution

The fourth proportional to 33,261.40, 49,892.10 and 20,860.30 is: 31,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,261.40 : 49,892.10 = 20,860.30 : x
  2. Step 2: Convert to fraction form
    33,261.40/49,892.10 = 20,860.30/x
  3. Step 3: Cross multiply
    33,261.40x = 49,892.10 × 20,860.30
  4. Step 4: Simplify right side
    33,261.40x = 1,040,764,173.63
  5. Step 5: Solve for x
    x = 1,040,764,173.63/33,261.40
  6. Step 6: Final answer
    x = 31,290.45

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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.