Home / 87,942.80-121,416.10-67,761.38

Finding the Fourth Proportional to 87,942.80, 121,416.10 and 67,761.38

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Solution

The fourth proportional to 87,942.80, 121,416.10 and 67,761.38 is: 93,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.80 : 121,416.10 = 67,761.38 : x
  2. Step 2: Convert to fraction form
    87,942.80/121,416.10 = 67,761.38/x
  3. Step 3: Cross multiply
    87,942.80x = 121,416.10 × 67,761.38
  4. Step 4: Simplify right side
    87,942.80x = 8,227,322,490.22
  5. Step 5: Solve for x
    x = 8,227,322,490.22/87,942.80
  6. Step 6: Final answer
    x = 93,553.11

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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.