Home / 57,162.72-85,743.44-20,218.08

Finding the Fourth Proportional to 57,162.72, 85,743.44 and 20,218.08

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Solution

The fourth proportional to 57,162.72, 85,743.44 and 20,218.08 is: 30,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,162.72 : 85,743.44 = 20,218.08 : x
  2. Step 2: Convert to fraction form
    57,162.72/85,743.44 = 20,218.08/x
  3. Step 3: Cross multiply
    57,162.72x = 85,743.44 × 20,218.08
  4. Step 4: Simplify right side
    57,162.72x = 1,733,567,729.40
  5. Step 5: Solve for x
    x = 1,733,567,729.40/57,162.72
  6. Step 6: Final answer
    x = 30,326.89

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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.