Home / 87,932.72-121,325.64-52,131.20

Finding the Fourth Proportional to 87,932.72, 121,325.64 and 52,131.20

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Solution

The fourth proportional to 87,932.72, 121,325.64 and 52,131.20 is: 71,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,932.72 : 121,325.64 = 52,131.20 : x
  2. Step 2: Convert to fraction form
    87,932.72/121,325.64 = 52,131.20/x
  3. Step 3: Cross multiply
    87,932.72x = 121,325.64 × 52,131.20
  4. Step 4: Simplify right side
    87,932.72x = 6,324,851,203.97
  5. Step 5: Solve for x
    x = 6,324,851,203.97/87,932.72
  6. Step 6: Final answer
    x = 71,928.30

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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.