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Finding the Fourth Proportional to 81,785.39, 122,449.34 and 44,210.63

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Solution

The fourth proportional to 81,785.39, 122,449.34 and 44,210.63 is: 66,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,785.39 : 122,449.34 = 44,210.63 : x
  2. Step 2: Convert to fraction form
    81,785.39/122,449.34 = 44,210.63/x
  3. Step 3: Cross multiply
    81,785.39x = 122,449.34 × 44,210.63
  4. Step 4: Simplify right side
    81,785.39x = 5,413,561,631.18
  5. Step 5: Solve for x
    x = 5,413,561,631.18/81,785.39
  6. Step 6: Final answer
    x = 66,192.29

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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.