Home / 81,983.10-122,974.68-63,290.42

Finding the Fourth Proportional to 81,983.10, 122,974.68 and 63,290.42

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Solution

The fourth proportional to 81,983.10, 122,974.68 and 63,290.42 is: 94,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,983.10 : 122,974.68 = 63,290.42 : x
  2. Step 2: Convert to fraction form
    81,983.10/122,974.68 = 63,290.42/x
  3. Step 3: Cross multiply
    81,983.10x = 122,974.68 × 63,290.42
  4. Step 4: Simplify right side
    81,983.10x = 7,783,119,146.57
  5. Step 5: Solve for x
    x = 7,783,119,146.57/81,983.10
  6. Step 6: Final answer
    x = 94,935.65

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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.