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Finding the Fourth Proportional to 72,604.80, 108,761.40 and 41,403.60

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Solution

The fourth proportional to 72,604.80, 108,761.40 and 41,403.60 is: 62,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.80 : 108,761.40 = 41,403.60 : x
  2. Step 2: Convert to fraction form
    72,604.80/108,761.40 = 41,403.60/x
  3. Step 3: Cross multiply
    72,604.80x = 108,761.40 × 41,403.60
  4. Step 4: Simplify right side
    72,604.80x = 4,503,113,501.04
  5. Step 5: Solve for x
    x = 4,503,113,501.04/72,604.80
  6. Step 6: Final answer
    x = 62,022.26

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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.