Home / 72,142.20-108,140.40-32,727.60

Finding the Fourth Proportional to 72,142.20, 108,140.40 and 32,727.60

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Solution

The fourth proportional to 72,142.20, 108,140.40 and 32,727.60 is: 49,058.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,142.20 : 108,140.40 = 32,727.60 : x
  2. Step 2: Convert to fraction form
    72,142.20/108,140.40 = 32,727.60/x
  3. Step 3: Cross multiply
    72,142.20x = 108,140.40 × 32,727.60
  4. Step 4: Simplify right side
    72,142.20x = 3,539,175,755.04
  5. Step 5: Solve for x
    x = 3,539,175,755.04/72,142.20
  6. Step 6: Final answer
    x = 49,058.33

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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.