Home / 87,918.20-131,718.74-54,125.41

Finding the Fourth Proportional to 87,918.20, 131,718.74 and 54,125.41

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Solution

The fourth proportional to 87,918.20, 131,718.74 and 54,125.41 is: 81,090.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.20 : 131,718.74 = 54,125.41 : x
  2. Step 2: Convert to fraction form
    87,918.20/131,718.74 = 54,125.41/x
  3. Step 3: Cross multiply
    87,918.20x = 131,718.74 × 54,125.41
  4. Step 4: Simplify right side
    87,918.20x = 7,129,330,283.90
  5. Step 5: Solve for x
    x = 7,129,330,283.90/87,918.20
  6. Step 6: Final answer
    x = 81,090.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.