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Finding the Fourth Proportional to 81,995.66, 122,916.69 and 44,500.70

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Solution

The fourth proportional to 81,995.66, 122,916.69 and 44,500.70 is: 66,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,995.66 : 122,916.69 = 44,500.70 : x
  2. Step 2: Convert to fraction form
    81,995.66/122,916.69 = 44,500.70/x
  3. Step 3: Cross multiply
    81,995.66x = 122,916.69 × 44,500.70
  4. Step 4: Simplify right side
    81,995.66x = 5,469,878,746.68
  5. Step 5: Solve for x
    x = 5,469,878,746.68/81,995.66
  6. Step 6: Final answer
    x = 66,709.37

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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.