Home / 81,845.50-122,767.90-22,681

Finding the Fourth Proportional to 81,845.50, 122,767.90 and 22,681

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Solution

The fourth proportional to 81,845.50, 122,767.90 and 22,681 is: 34,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,845.50 : 122,767.90 = 22,681 : x
  2. Step 2: Convert to fraction form
    81,845.50/122,767.90 = 22,681/x
  3. Step 3: Cross multiply
    81,845.50x = 122,767.90 × 22,681
  4. Step 4: Simplify right side
    81,845.50x = 2,784,498,739.90
  5. Step 5: Solve for x
    x = 2,784,498,739.90/81,845.50
  6. Step 6: Final answer
    x = 34,021.40

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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.