Home / 87,782.82-121,139.87-47,496.53

Finding the Fourth Proportional to 87,782.82, 121,139.87 and 47,496.53

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Solution

The fourth proportional to 87,782.82, 121,139.87 and 47,496.53 is: 65,544.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,782.82 : 121,139.87 = 47,496.53 : x
  2. Step 2: Convert to fraction form
    87,782.82/121,139.87 = 47,496.53/x
  3. Step 3: Cross multiply
    87,782.82x = 121,139.87 × 47,496.53
  4. Step 4: Simplify right side
    87,782.82x = 5,753,722,626.47
  5. Step 5: Solve for x
    x = 5,753,722,626.47/87,782.82
  6. Step 6: Final answer
    x = 65,544.97

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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.