Home / 57,872.14-86,718.42-40,137.39

Finding the Fourth Proportional to 57,872.14, 86,718.42 and 40,137.39

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Solution

The fourth proportional to 57,872.14, 86,718.42 and 40,137.39 is: 60,143.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,872.14 : 86,718.42 = 40,137.39 : x
  2. Step 2: Convert to fraction form
    57,872.14/86,718.42 = 40,137.39/x
  3. Step 3: Cross multiply
    57,872.14x = 86,718.42 × 40,137.39
  4. Step 4: Simplify right side
    57,872.14x = 3,480,651,043.72
  5. Step 5: Solve for x
    x = 3,480,651,043.72/57,872.14
  6. Step 6: Final answer
    x = 60,143.81

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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.