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Finding the Fourth Proportional to 71,777.28, 107,841.12 and 67,798.56

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Solution

The fourth proportional to 71,777.28, 107,841.12 and 67,798.56 is: 101,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,777.28 : 107,841.12 = 67,798.56 : x
  2. Step 2: Convert to fraction form
    71,777.28/107,841.12 = 67,798.56/x
  3. Step 3: Cross multiply
    71,777.28x = 107,841.12 × 67,798.56
  4. Step 4: Simplify right side
    71,777.28x = 7,311,472,644.79
  5. Step 5: Solve for x
    x = 7,311,472,644.79/71,777.28
  6. Step 6: Final answer
    x = 101,863.33

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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.