Home / 57,899-86,799.22-55,143.36

Finding the Fourth Proportional to 57,899, 86,799.22 and 55,143.36

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Solution

The fourth proportional to 57,899, 86,799.22 and 55,143.36 is: 82,668.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,899 : 86,799.22 = 55,143.36 : x
  2. Step 2: Convert to fraction form
    57,899/86,799.22 = 55,143.36/x
  3. Step 3: Cross multiply
    57,899x = 86,799.22 × 55,143.36
  4. Step 4: Simplify right side
    57,899x = 4,786,400,636.18
  5. Step 5: Solve for x
    x = 4,786,400,636.18/57,899
  6. Step 6: Final answer
    x = 82,668.11

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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.