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Finding the Fourth Proportional to 70,371.68, 105,390 and 40,727.04

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Solution

The fourth proportional to 70,371.68, 105,390 and 40,727.04 is: 60,993.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,371.68 : 105,390 = 40,727.04 : x
  2. Step 2: Convert to fraction form
    70,371.68/105,390 = 40,727.04/x
  3. Step 3: Cross multiply
    70,371.68x = 105,390 × 40,727.04
  4. Step 4: Simplify right side
    70,371.68x = 4,292,222,745.60
  5. Step 5: Solve for x
    x = 4,292,222,745.60/70,371.68
  6. Step 6: Final answer
    x = 60,993.61

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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.