Home / 57,145.23-85,704.89-20,209.23

Finding the Fourth Proportional to 57,145.23, 85,704.89 and 20,209.23

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Solution

The fourth proportional to 57,145.23, 85,704.89 and 20,209.23 is: 30,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,145.23 : 85,704.89 = 20,209.23 : x
  2. Step 2: Convert to fraction form
    57,145.23/85,704.89 = 20,209.23/x
  3. Step 3: Cross multiply
    57,145.23x = 85,704.89 × 20,209.23
  4. Step 4: Simplify right side
    57,145.23x = 1,732,029,733.09
  5. Step 5: Solve for x
    x = 1,732,029,733.09/57,145.23
  6. Step 6: Final answer
    x = 30,309.26

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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.