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Finding the Fourth Proportional to 72,610.80, 108,770.40 and 41,409.60

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Solution

The fourth proportional to 72,610.80, 108,770.40 and 41,409.60 is: 62,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610.80 : 108,770.40 = 41,409.60 : x
  2. Step 2: Convert to fraction form
    72,610.80/108,770.40 = 41,409.60/x
  3. Step 3: Cross multiply
    72,610.80x = 108,770.40 × 41,409.60
  4. Step 4: Simplify right side
    72,610.80x = 4,504,138,755.84
  5. Step 5: Solve for x
    x = 4,504,138,755.84/72,610.80
  6. Step 6: Final answer
    x = 62,031.25

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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.