Home / 87,782.32-121,139.17-47,496.03

Finding the Fourth Proportional to 87,782.32, 121,139.17 and 47,496.03

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Solution

The fourth proportional to 87,782.32, 121,139.17 and 47,496.03 is: 65,544.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,782.32 : 121,139.17 = 47,496.03 : x
  2. Step 2: Convert to fraction form
    87,782.32/121,139.17 = 47,496.03/x
  3. Step 3: Cross multiply
    87,782.32x = 121,139.17 × 47,496.03
  4. Step 4: Simplify right side
    87,782.32x = 5,753,629,652.50
  5. Step 5: Solve for x
    x = 5,753,629,652.50/87,782.32
  6. Step 6: Final answer
    x = 65,544.29

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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.