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Finding the Fourth Proportional to 79,749.61, 119,640.82 and 54,801.41

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Solution

The fourth proportional to 79,749.61, 119,640.82 and 54,801.41 is: 82,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,749.61 : 119,640.82 = 54,801.41 : x
  2. Step 2: Convert to fraction form
    79,749.61/119,640.82 = 54,801.41/x
  3. Step 3: Cross multiply
    79,749.61x = 119,640.82 × 54,801.41
  4. Step 4: Simplify right side
    79,749.61x = 6,556,485,875.59
  5. Step 5: Solve for x
    x = 6,556,485,875.59/79,749.61
  6. Step 6: Final answer
    x = 82,213.39

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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.