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Finding the Fourth Proportional to 72,003.60, 108,120.60 and 48,733.20

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Solution

The fourth proportional to 72,003.60, 108,120.60 and 48,733.20 is: 73,177.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.60 : 108,120.60 = 48,733.20 : x
  2. Step 2: Convert to fraction form
    72,003.60/108,120.60 = 48,733.20/x
  3. Step 3: Cross multiply
    72,003.60x = 108,120.60 × 48,733.20
  4. Step 4: Simplify right side
    72,003.60x = 5,269,062,823.92
  5. Step 5: Solve for x
    x = 5,269,062,823.92/72,003.60
  6. Step 6: Final answer
    x = 73,177.77

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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.