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Finding the Fourth Proportional to 81,767.84, 122,355.68 and 67,596.08

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Solution

The fourth proportional to 81,767.84, 122,355.68 and 67,596.08 is: 101,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,767.84 : 122,355.68 = 67,596.08 : x
  2. Step 2: Convert to fraction form
    81,767.84/122,355.68 = 67,596.08/x
  3. Step 3: Cross multiply
    81,767.84x = 122,355.68 × 67,596.08
  4. Step 4: Simplify right side
    81,767.84x = 8,270,764,333.73
  5. Step 5: Solve for x
    x = 8,270,764,333.73/81,767.84
  6. Step 6: Final answer
    x = 101,149.36

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1.5x scale

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.