Home / 81,912.98-122,869.52-22,748.64

Finding the Fourth Proportional to 81,912.98, 122,869.52 and 22,748.64

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Solution

The fourth proportional to 81,912.98, 122,869.52 and 22,748.64 is: 34,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,912.98 : 122,869.52 = 22,748.64 : x
  2. Step 2: Convert to fraction form
    81,912.98/122,869.52 = 22,748.64/x
  3. Step 3: Cross multiply
    81,912.98x = 122,869.52 × 22,748.64
  4. Step 4: Simplify right side
    81,912.98x = 2,795,114,363.71
  5. Step 5: Solve for x
    x = 2,795,114,363.71/81,912.98
  6. Step 6: Final answer
    x = 34,122.97

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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.