Home / 81,983.07-122,868.09-36,971.37

Finding the Fourth Proportional to 81,983.07, 122,868.09 and 36,971.37

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Solution

The fourth proportional to 81,983.07, 122,868.09 and 36,971.37 is: 55,409.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,983.07 : 122,868.09 = 36,971.37 : x
  2. Step 2: Convert to fraction form
    81,983.07/122,868.09 = 36,971.37/x
  3. Step 3: Cross multiply
    81,983.07x = 122,868.09 × 36,971.37
  4. Step 4: Simplify right side
    81,983.07x = 4,542,601,616.58
  5. Step 5: Solve for x
    x = 4,542,601,616.58/81,983.07
  6. Step 6: Final answer
    x = 55,409.02

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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.