Home / 81,983.45-122,868.65-36,971.75

Finding the Fourth Proportional to 81,983.45, 122,868.65 and 36,971.75

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Solution

The fourth proportional to 81,983.45, 122,868.65 and 36,971.75 is: 55,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,983.45 : 122,868.65 = 36,971.75 : x
  2. Step 2: Convert to fraction form
    81,983.45/122,868.65 = 36,971.75/x
  3. Step 3: Cross multiply
    81,983.45x = 122,868.65 × 36,971.75
  4. Step 4: Simplify right side
    81,983.45x = 4,542,668,488.72
  5. Step 5: Solve for x
    x = 4,542,668,488.72/81,983.45
  6. Step 6: Final answer
    x = 55,409.58

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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.