Home / 87,916.80-121,380.21-67,735.38

Finding the Fourth Proportional to 87,916.80, 121,380.21 and 67,735.38

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Solution

The fourth proportional to 87,916.80, 121,380.21 and 67,735.38 is: 93,517.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,916.80 : 121,380.21 = 67,735.38 : x
  2. Step 2: Convert to fraction form
    87,916.80/121,380.21 = 67,735.38/x
  3. Step 3: Cross multiply
    87,916.80x = 121,380.21 × 67,735.38
  4. Step 4: Simplify right side
    87,916.80x = 8,221,734,648.83
  5. Step 5: Solve for x
    x = 8,221,734,648.83/87,916.80
  6. Step 6: Final answer
    x = 93,517.22

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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.