Home / 87,943.05-121,361.90-47,656.85

Finding the Fourth Proportional to 87,943.05, 121,361.90 and 47,656.85

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Solution

The fourth proportional to 87,943.05, 121,361.90 and 47,656.85 is: 65,766.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,943.05 : 121,361.90 = 47,656.85 : x
  2. Step 2: Convert to fraction form
    87,943.05/121,361.90 = 47,656.85/x
  3. Step 3: Cross multiply
    87,943.05x = 121,361.90 × 47,656.85
  4. Step 4: Simplify right side
    87,943.05x = 5,783,725,018.92
  5. Step 5: Solve for x
    x = 5,783,725,018.92/87,943.05
  6. Step 6: Final answer
    x = 65,766.71

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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.