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Finding the Fourth Proportional to 81,457.72, 122,241.94 and 44,029.28

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Solution

The fourth proportional to 81,457.72, 122,241.94 and 44,029.28 is: 66,073.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,457.72 : 122,241.94 = 44,029.28 : x
  2. Step 2: Convert to fraction form
    81,457.72/122,241.94 = 44,029.28/x
  3. Step 3: Cross multiply
    81,457.72x = 122,241.94 × 44,029.28
  4. Step 4: Simplify right side
    81,457.72x = 5,382,224,604.00
  5. Step 5: Solve for x
    x = 5,382,224,604.00/81,457.72
  6. Step 6: Final answer
    x = 66,073.84

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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.