Home / 81,531.03-112,513.97-49,261.16

Finding the Fourth Proportional to 81,531.03, 112,513.97 and 49,261.16

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Solution

The fourth proportional to 81,531.03, 112,513.97 and 49,261.16 is: 67,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.03 : 112,513.97 = 49,261.16 : x
  2. Step 2: Convert to fraction form
    81,531.03/112,513.97 = 49,261.16/x
  3. Step 3: Cross multiply
    81,531.03x = 112,513.97 × 49,261.16
  4. Step 4: Simplify right side
    81,531.03x = 5,542,568,115.84
  5. Step 5: Solve for x
    x = 5,542,568,115.84/81,531.03
  6. Step 6: Final answer
    x = 67,981.09

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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.