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Finding the Fourth Proportional to 73,845.40, 101,906.10 and 40,311.40

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Solution

The fourth proportional to 73,845.40, 101,906.10 and 40,311.40 is: 55,629.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,845.40 : 101,906.10 = 40,311.40 : x
  2. Step 2: Convert to fraction form
    73,845.40/101,906.10 = 40,311.40/x
  3. Step 3: Cross multiply
    73,845.40x = 101,906.10 × 40,311.40
  4. Step 4: Simplify right side
    73,845.40x = 4,107,977,559.54
  5. Step 5: Solve for x
    x = 4,107,977,559.54/73,845.40
  6. Step 6: Final answer
    x = 55,629.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.