Home / 55,205.17-82,809.11-20,144.81

Finding the Fourth Proportional to 55,205.17, 82,809.11 and 20,144.81

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Solution

The fourth proportional to 55,205.17, 82,809.11 and 20,144.81 is: 30,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,205.17 : 82,809.11 = 20,144.81 : x
  2. Step 2: Convert to fraction form
    55,205.17/82,809.11 = 20,144.81/x
  3. Step 3: Cross multiply
    55,205.17x = 82,809.11 × 20,144.81
  4. Step 4: Simplify right side
    55,205.17x = 1,668,174,044.60
  5. Step 5: Solve for x
    x = 1,668,174,044.60/55,205.17
  6. Step 6: Final answer
    x = 30,217.72

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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.