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Finding the Fourth Proportional to 70,660.31, 105,990.41 and 33,192.88

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Solution

The fourth proportional to 70,660.31, 105,990.41 and 33,192.88 is: 49,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,660.31 : 105,990.41 = 33,192.88 : x
  2. Step 2: Convert to fraction form
    70,660.31/105,990.41 = 33,192.88/x
  3. Step 3: Cross multiply
    70,660.31x = 105,990.41 × 33,192.88
  4. Step 4: Simplify right side
    70,660.31x = 3,518,126,778.29
  5. Step 5: Solve for x
    x = 3,518,126,778.29/70,660.31
  6. Step 6: Final answer
    x = 49,789.30

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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.