Home / 40,187.25-60,318.09-20,480.49

Finding the Fourth Proportional to 40,187.25, 60,318.09 and 20,480.49

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Solution

The fourth proportional to 40,187.25, 60,318.09 and 20,480.49 is: 30,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,187.25 : 60,318.09 = 20,480.49 : x
  2. Step 2: Convert to fraction form
    40,187.25/60,318.09 = 20,480.49/x
  3. Step 3: Cross multiply
    40,187.25x = 60,318.09 × 20,480.49
  4. Step 4: Simplify right side
    40,187.25x = 1,235,344,039.06
  5. Step 5: Solve for x
    x = 1,235,344,039.06/40,187.25
  6. Step 6: Final answer
    x = 30,739.70

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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.