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Finding the Fourth Proportional to 104,989.72, 144,883.20 and 57,244

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Solution

The fourth proportional to 104,989.72, 144,883.20 and 57,244 is: 78,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,989.72 : 144,883.20 = 57,244 : x
  2. Step 2: Convert to fraction form
    104,989.72/144,883.20 = 57,244/x
  3. Step 3: Cross multiply
    104,989.72x = 144,883.20 × 57,244
  4. Step 4: Simplify right side
    104,989.72x = 8,293,693,900.80
  5. Step 5: Solve for x
    x = 8,293,693,900.80/104,989.72
  6. Step 6: Final answer
    x = 78,995.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.