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Finding the Fourth Proportional to 84,006.09, 126,027.54 and 61,751.97

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Solution

The fourth proportional to 84,006.09, 126,027.54 and 61,751.97 is: 92,641.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006.09 : 126,027.54 = 61,751.97 : x
  2. Step 2: Convert to fraction form
    84,006.09/126,027.54 = 61,751.97/x
  3. Step 3: Cross multiply
    84,006.09x = 126,027.54 × 61,751.97
  4. Step 4: Simplify right side
    84,006.09x = 7,782,448,869.25
  5. Step 5: Solve for x
    x = 7,782,448,869.25/84,006.09
  6. Step 6: Final answer
    x = 92,641.48

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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.