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Finding the Fourth Proportional to 78,902.52, 108,884.90 and 43,092.54

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Solution

The fourth proportional to 78,902.52, 108,884.90 and 43,092.54 is: 59,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,902.52 : 108,884.90 = 43,092.54 : x
  2. Step 2: Convert to fraction form
    78,902.52/108,884.90 = 43,092.54/x
  3. Step 3: Cross multiply
    78,902.52x = 108,884.90 × 43,092.54
  4. Step 4: Simplify right side
    78,902.52x = 4,692,126,908.65
  5. Step 5: Solve for x
    x = 4,692,126,908.65/78,902.52
  6. Step 6: Final answer
    x = 59,467.39

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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.