Home / 87,725.31-121,061.64-48,435.54

Finding the Fourth Proportional to 87,725.31, 121,061.64 and 48,435.54

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Solution

The fourth proportional to 87,725.31, 121,061.64 and 48,435.54 is: 66,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,725.31 : 121,061.64 = 48,435.54 : x
  2. Step 2: Convert to fraction form
    87,725.31/121,061.64 = 48,435.54/x
  3. Step 3: Cross multiply
    87,725.31x = 121,061.64 × 48,435.54
  4. Step 4: Simplify right side
    87,725.31x = 5,863,685,906.69
  5. Step 5: Solve for x
    x = 5,863,685,906.69/87,725.31
  6. Step 6: Final answer
    x = 66,841.44

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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.