Home / 40,257.92-55,608.22-30,639.38

Finding the Fourth Proportional to 40,257.92, 55,608.22 and 30,639.38

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Solution

The fourth proportional to 40,257.92, 55,608.22 and 30,639.38 is: 42,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,257.92 : 55,608.22 = 30,639.38 : x
  2. Step 2: Convert to fraction form
    40,257.92/55,608.22 = 30,639.38/x
  3. Step 3: Cross multiply
    40,257.92x = 55,608.22 × 30,639.38
  4. Step 4: Simplify right side
    40,257.92x = 1,703,801,143.96
  5. Step 5: Solve for x
    x = 1,703,801,143.96/40,257.92
  6. Step 6: Final answer
    x = 42,322.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.