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Finding the Fourth Proportional to 72,605.80, 108,762.90 and 41,404.60

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Solution

The fourth proportional to 72,605.80, 108,762.90 and 41,404.60 is: 62,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.80 : 108,762.90 = 41,404.60 : x
  2. Step 2: Convert to fraction form
    72,605.80/108,762.90 = 41,404.60/x
  3. Step 3: Cross multiply
    72,605.80x = 108,762.90 × 41,404.60
  4. Step 4: Simplify right side
    72,605.80x = 4,503,284,369.34
  5. Step 5: Solve for x
    x = 4,503,284,369.34/72,605.80
  6. Step 6: Final answer
    x = 62,023.76

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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.