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Finding the Fourth Proportional to 78,794.73, 108,699.21 and 53,310.06

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Solution

The fourth proportional to 78,794.73, 108,699.21 and 53,310.06 is: 73,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,794.73 : 108,699.21 = 53,310.06 : x
  2. Step 2: Convert to fraction form
    78,794.73/108,699.21 = 53,310.06/x
  3. Step 3: Cross multiply
    78,794.73x = 108,699.21 × 53,310.06
  4. Step 4: Simplify right side
    78,794.73x = 5,794,761,407.05
  5. Step 5: Solve for x
    x = 5,794,761,407.05/78,794.73
  6. Step 6: Final answer
    x = 73,542.50

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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.