Home / 81,982.91-122,974.38-63,290.23

Finding the Fourth Proportional to 81,982.91, 122,974.38 and 63,290.23

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Solution

The fourth proportional to 81,982.91, 122,974.38 and 63,290.23 is: 94,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,982.91 : 122,974.38 = 63,290.23 : x
  2. Step 2: Convert to fraction form
    81,982.91/122,974.38 = 63,290.23/x
  3. Step 3: Cross multiply
    81,982.91x = 122,974.38 × 63,290.23
  4. Step 4: Simplify right side
    81,982.91x = 7,783,076,486.87
  5. Step 5: Solve for x
    x = 7,783,076,486.87/81,982.91
  6. Step 6: Final answer
    x = 94,935.35

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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.