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Finding the Fourth Proportional to 104,959.59, 144,845.76 and 57,212.96

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Solution

The fourth proportional to 104,959.59, 144,845.76 and 57,212.96 is: 78,954.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,959.59 : 144,845.76 = 57,212.96 : x
  2. Step 2: Convert to fraction form
    104,959.59/144,845.76 = 57,212.96/x
  3. Step 3: Cross multiply
    104,959.59x = 144,845.76 × 57,212.96
  4. Step 4: Simplify right side
    104,959.59x = 8,287,053,948.82
  5. Step 5: Solve for x
    x = 8,287,053,948.82/104,959.59
  6. Step 6: Final answer
    x = 78,954.71

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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.