Home / 80,777.97-121,217.48-30,862.33

Finding the Fourth Proportional to 80,777.97, 121,217.48 and 30,862.33

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Solution

The fourth proportional to 80,777.97, 121,217.48 and 30,862.33 is: 46,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,777.97 : 121,217.48 = 30,862.33 : x
  2. Step 2: Convert to fraction form
    80,777.97/121,217.48 = 30,862.33/x
  3. Step 3: Cross multiply
    80,777.97x = 121,217.48 × 30,862.33
  4. Step 4: Simplify right side
    80,777.97x = 3,741,053,869.53
  5. Step 5: Solve for x
    x = 3,741,053,869.53/80,777.97
  6. Step 6: Final answer
    x = 46,312.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.