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Finding the Fourth Proportional to 70,800.57, 106,198.38 and 20,881.44

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Solution

The fourth proportional to 70,800.57, 106,198.38 and 20,881.44 is: 31,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800.57 : 106,198.38 = 20,881.44 : x
  2. Step 2: Convert to fraction form
    70,800.57/106,198.38 = 20,881.44/x
  3. Step 3: Cross multiply
    70,800.57x = 106,198.38 × 20,881.44
  4. Step 4: Simplify right side
    70,800.57x = 2,217,575,100.07
  5. Step 5: Solve for x
    x = 2,217,575,100.07/70,800.57
  6. Step 6: Final answer
    x = 31,321.43

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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.