Home / 87,721.72-121,069.60-57,594.42

Finding the Fourth Proportional to 87,721.72, 121,069.60 and 57,594.42

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Solution

The fourth proportional to 87,721.72, 121,069.60 and 57,594.42 is: 79,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.72 : 121,069.60 = 57,594.42 : x
  2. Step 2: Convert to fraction form
    87,721.72/121,069.60 = 57,594.42/x
  3. Step 3: Cross multiply
    87,721.72x = 121,069.60 × 57,594.42
  4. Step 4: Simplify right side
    87,721.72x = 6,972,933,391.63
  5. Step 5: Solve for x
    x = 6,972,933,391.63/87,721.72
  6. Step 6: Final answer
    x = 79,489.25

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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.