Home / 55,205.54-82,809.68-20,145.19

Finding the Fourth Proportional to 55,205.54, 82,809.68 and 20,145.19

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Solution

The fourth proportional to 55,205.54, 82,809.68 and 20,145.19 is: 30,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,205.54 : 82,809.68 = 20,145.19 : x
  2. Step 2: Convert to fraction form
    55,205.54/82,809.68 = 20,145.19/x
  3. Step 3: Cross multiply
    55,205.54x = 82,809.68 × 20,145.19
  4. Step 4: Simplify right side
    55,205.54x = 1,668,216,429.69
  5. Step 5: Solve for x
    x = 1,668,216,429.69/55,205.54
  6. Step 6: Final answer
    x = 30,218.28

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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.