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Finding the Fourth Proportional to 70,801.29, 106,220.16 and 20,879.37

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Solution

The fourth proportional to 70,801.29, 106,220.16 and 20,879.37 is: 31,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,801.29 : 106,220.16 = 20,879.37 : x
  2. Step 2: Convert to fraction form
    70,801.29/106,220.16 = 20,879.37/x
  3. Step 3: Cross multiply
    70,801.29x = 106,220.16 × 20,879.37
  4. Step 4: Simplify right side
    70,801.29x = 2,217,810,022.10
  5. Step 5: Solve for x
    x = 2,217,810,022.10/70,801.29
  6. Step 6: Final answer
    x = 31,324.43

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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.