Home / 40,239.09-60,318.45-20,187.32

Finding the Fourth Proportional to 40,239.09, 60,318.45 and 20,187.32

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Solution

The fourth proportional to 40,239.09, 60,318.45 and 20,187.32 is: 30,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,239.09 : 60,318.45 = 20,187.32 : x
  2. Step 2: Convert to fraction form
    40,239.09/60,318.45 = 20,187.32/x
  3. Step 3: Cross multiply
    40,239.09x = 60,318.45 × 20,187.32
  4. Step 4: Simplify right side
    40,239.09x = 1,217,667,550.46
  5. Step 5: Solve for x
    x = 1,217,667,550.46/40,239.09
  6. Step 6: Final answer
    x = 30,260.81

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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.