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Finding the Fourth Proportional to 81,376.90, 122,065.34 and 22,214.14

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Solution

The fourth proportional to 81,376.90, 122,065.34 and 22,214.14 is: 33,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,376.90 : 122,065.34 = 22,214.14 : x
  2. Step 2: Convert to fraction form
    81,376.90/122,065.34 = 22,214.14/x
  3. Step 3: Cross multiply
    81,376.90x = 122,065.34 × 22,214.14
  4. Step 4: Simplify right side
    81,376.90x = 2,711,576,551.91
  5. Step 5: Solve for x
    x = 2,711,576,551.91/81,376.90
  6. Step 6: Final answer
    x = 33,321.21

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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.