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Finding the Fourth Proportional to 72,004.60, 108,122.10 and 48,734.20

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Solution

The fourth proportional to 72,004.60, 108,122.10 and 48,734.20 is: 73,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,004.60 : 108,122.10 = 48,734.20 : x
  2. Step 2: Convert to fraction form
    72,004.60/108,122.10 = 48,734.20/x
  3. Step 3: Cross multiply
    72,004.60x = 108,122.10 × 48,734.20
  4. Step 4: Simplify right side
    72,004.60x = 5,269,244,045.82
  5. Step 5: Solve for x
    x = 5,269,244,045.82/72,004.60
  6. Step 6: Final answer
    x = 73,179.27

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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.