Home / 81,238.22-112,121.43-49,417.10

Finding the Fourth Proportional to 81,238.22, 112,121.43 and 49,417.10

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Solution

The fourth proportional to 81,238.22, 112,121.43 and 49,417.10 is: 68,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.22 : 112,121.43 = 49,417.10 : x
  2. Step 2: Convert to fraction form
    81,238.22/112,121.43 = 49,417.10/x
  3. Step 3: Cross multiply
    81,238.22x = 112,121.43 × 49,417.10
  4. Step 4: Simplify right side
    81,238.22x = 5,540,715,918.45
  5. Step 5: Solve for x
    x = 5,540,715,918.45/81,238.22
  6. Step 6: Final answer
    x = 68,203.32

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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.