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Finding the Fourth Proportional to 78,850.80, 108,816.68 and 43,042.73

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Solution

The fourth proportional to 78,850.80, 108,816.68 and 43,042.73 is: 59,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.80 : 108,816.68 = 43,042.73 : x
  2. Step 2: Convert to fraction form
    78,850.80/108,816.68 = 43,042.73/x
  3. Step 3: Cross multiply
    78,850.80x = 108,816.68 × 43,042.73
  4. Step 4: Simplify right side
    78,850.80x = 4,683,766,540.26
  5. Step 5: Solve for x
    x = 4,683,766,540.26/78,850.80
  6. Step 6: Final answer
    x = 59,400.37

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1.5x scale

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.