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Finding the Fourth Proportional to 73,237.88, 109,847.10 and 20,651.60

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Solution

The fourth proportional to 73,237.88, 109,847.10 and 20,651.60 is: 30,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,237.88 : 109,847.10 = 20,651.60 : x
  2. Step 2: Convert to fraction form
    73,237.88/109,847.10 = 20,651.60/x
  3. Step 3: Cross multiply
    73,237.88x = 109,847.10 × 20,651.60
  4. Step 4: Simplify right side
    73,237.88x = 2,268,518,370.36
  5. Step 5: Solve for x
    x = 2,268,518,370.36/73,237.88
  6. Step 6: Final answer
    x = 30,974.66

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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.