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Finding the Fourth Proportional to 81,676.84, 122,515.26 and 22,510.60

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Solution

The fourth proportional to 81,676.84, 122,515.26 and 22,510.60 is: 33,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,676.84 : 122,515.26 = 22,510.60 : x
  2. Step 2: Convert to fraction form
    81,676.84/122,515.26 = 22,510.60/x
  3. Step 3: Cross multiply
    81,676.84x = 122,515.26 × 22,510.60
  4. Step 4: Simplify right side
    81,676.84x = 2,757,892,011.76
  5. Step 5: Solve for x
    x = 2,757,892,011.76/81,676.84
  6. Step 6: Final answer
    x = 33,765.90

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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.