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Finding the Fourth Proportional to 71,243.21, 106,799.21 and 33,820.91

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Solution

The fourth proportional to 71,243.21, 106,799.21 and 33,820.91 is: 50,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,243.21 : 106,799.21 = 33,820.91 : x
  2. Step 2: Convert to fraction form
    71,243.21/106,799.21 = 33,820.91/x
  3. Step 3: Cross multiply
    71,243.21x = 106,799.21 × 33,820.91
  4. Step 4: Simplify right side
    71,243.21x = 3,612,046,293.71
  5. Step 5: Solve for x
    x = 3,612,046,293.71/71,243.21
  6. Step 6: Final answer
    x = 50,700.22

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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.