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Finding the Fourth Proportional to 71,963.83, 107,222.20 and 67,939.75

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Solution

The fourth proportional to 71,963.83, 107,222.20 and 67,939.75 is: 101,226.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,963.83 : 107,222.20 = 67,939.75 : x
  2. Step 2: Convert to fraction form
    71,963.83/107,222.20 = 67,939.75/x
  3. Step 3: Cross multiply
    71,963.83x = 107,222.20 × 67,939.75
  4. Step 4: Simplify right side
    71,963.83x = 7,284,649,462.45
  5. Step 5: Solve for x
    x = 7,284,649,462.45/71,963.83
  6. Step 6: Final answer
    x = 101,226.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.