Home / 87,988.24-121,379.22-55,668.64

Finding the Fourth Proportional to 87,988.24, 121,379.22 and 55,668.64

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Solution

The fourth proportional to 87,988.24, 121,379.22 and 55,668.64 is: 76,794.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,988.24 : 121,379.22 = 55,668.64 : x
  2. Step 2: Convert to fraction form
    87,988.24/121,379.22 = 55,668.64/x
  3. Step 3: Cross multiply
    87,988.24x = 121,379.22 × 55,668.64
  4. Step 4: Simplify right side
    87,988.24x = 6,757,016,101.66
  5. Step 5: Solve for x
    x = 6,757,016,101.66/87,988.24
  6. Step 6: Final answer
    x = 76,794.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.