Home / 87,932.36-121,352.61-49,678.64

Finding the Fourth Proportional to 87,932.36, 121,352.61 and 49,678.64

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Solution

The fourth proportional to 87,932.36, 121,352.61 and 49,678.64 is: 68,559.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,932.36 : 121,352.61 = 49,678.64 : x
  2. Step 2: Convert to fraction form
    87,932.36/121,352.61 = 49,678.64/x
  3. Step 3: Cross multiply
    87,932.36x = 121,352.61 × 49,678.64
  4. Step 4: Simplify right side
    87,932.36x = 6,028,632,625.25
  5. Step 5: Solve for x
    x = 6,028,632,625.25/87,932.36
  6. Step 6: Final answer
    x = 68,559.89

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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.