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Finding the Fourth Proportional to 73,411.60, 109,944.60 and 49,910.80

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Solution

The fourth proportional to 73,411.60, 109,944.60 and 49,910.80 is: 74,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,411.60 : 109,944.60 = 49,910.80 : x
  2. Step 2: Convert to fraction form
    73,411.60/109,944.60 = 49,910.80/x
  3. Step 3: Cross multiply
    73,411.60x = 109,944.60 × 49,910.80
  4. Step 4: Simplify right side
    73,411.60x = 5,487,422,941.68
  5. Step 5: Solve for x
    x = 5,487,422,941.68/73,411.60
  6. Step 6: Final answer
    x = 74,748.72

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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.