Home / 87,410.31-120,623.25-49,170.60

Finding the Fourth Proportional to 87,410.31, 120,623.25 and 49,170.60

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Solution

The fourth proportional to 87,410.31, 120,623.25 and 49,170.60 is: 67,853.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,410.31 : 120,623.25 = 49,170.60 : x
  2. Step 2: Convert to fraction form
    87,410.31/120,623.25 = 49,170.60/x
  3. Step 3: Cross multiply
    87,410.31x = 120,623.25 × 49,170.60
  4. Step 4: Simplify right side
    87,410.31x = 5,931,117,576.45
  5. Step 5: Solve for x
    x = 5,931,117,576.45/87,410.31
  6. Step 6: Final answer
    x = 67,853.75

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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.