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Finding the Fourth Proportional to 70,693.38, 106,014.09 and 20,760.66

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Solution

The fourth proportional to 70,693.38, 106,014.09 and 20,760.66 is: 31,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,693.38 : 106,014.09 = 20,760.66 : x
  2. Step 2: Convert to fraction form
    70,693.38/106,014.09 = 20,760.66/x
  3. Step 3: Cross multiply
    70,693.38x = 106,014.09 × 20,760.66
  4. Step 4: Simplify right side
    70,693.38x = 2,200,922,477.70
  5. Step 5: Solve for x
    x = 2,200,922,477.70/70,693.38
  6. Step 6: Final answer
    x = 31,133.36

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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.