Home / 81,129.06-111,893.94-49,297.14

Finding the Fourth Proportional to 81,129.06, 111,893.94 and 49,297.14

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Solution

The fourth proportional to 81,129.06, 111,893.94 and 49,297.14 is: 67,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129.06 : 111,893.94 = 49,297.14 : x
  2. Step 2: Convert to fraction form
    81,129.06/111,893.94 = 49,297.14/x
  3. Step 3: Cross multiply
    81,129.06x = 111,893.94 × 49,297.14
  4. Step 4: Simplify right side
    81,129.06x = 5,516,051,225.33
  5. Step 5: Solve for x
    x = 5,516,051,225.33/81,129.06
  6. Step 6: Final answer
    x = 67,991.07

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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.