Home / 55,201.06-82,813.88-20,140.71

Finding the Fourth Proportional to 55,201.06, 82,813.88 and 20,140.71

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Solution

The fourth proportional to 55,201.06, 82,813.88 and 20,140.71 is: 30,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,201.06 : 82,813.88 = 20,140.71 : x
  2. Step 2: Convert to fraction form
    55,201.06/82,813.88 = 20,140.71/x
  3. Step 3: Cross multiply
    55,201.06x = 82,813.88 × 20,140.71
  4. Step 4: Simplify right side
    55,201.06x = 1,667,930,341.05
  5. Step 5: Solve for x
    x = 1,667,930,341.05/55,201.06
  6. Step 6: Final answer
    x = 30,215.55

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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.