Home / 55,181.28-82,784.16-20,120.85

Finding the Fourth Proportional to 55,181.28, 82,784.16 and 20,120.85

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Solution

The fourth proportional to 55,181.28, 82,784.16 and 20,120.85 is: 30,185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,181.28 : 82,784.16 = 20,120.85 : x
  2. Step 2: Convert to fraction form
    55,181.28/82,784.16 = 20,120.85/x
  3. Step 3: Cross multiply
    55,181.28x = 82,784.16 × 20,120.85
  4. Step 4: Simplify right side
    55,181.28x = 1,665,687,665.74
  5. Step 5: Solve for x
    x = 1,665,687,665.74/55,181.28
  6. Step 6: Final answer
    x = 30,185.74

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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.