Home / 87,991.36-121,396.25-57,793.05

Finding the Fourth Proportional to 87,991.36, 121,396.25 and 57,793.05

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Solution

The fourth proportional to 87,991.36, 121,396.25 and 57,793.05 is: 79,733.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,991.36 : 121,396.25 = 57,793.05 : x
  2. Step 2: Convert to fraction form
    87,991.36/121,396.25 = 57,793.05/x
  3. Step 3: Cross multiply
    87,991.36x = 121,396.25 × 57,793.05
  4. Step 4: Simplify right side
    87,991.36x = 7,015,859,690.55
  5. Step 5: Solve for x
    x = 7,015,859,690.55/87,991.36
  6. Step 6: Final answer
    x = 79,733.51

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1.5x scale

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.