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Finding the Fourth Proportional to 73,265.05, 109,811.18 and 31,145.05

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Solution

The fourth proportional to 73,265.05, 109,811.18 and 31,145.05 is: 46,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,265.05 : 109,811.18 = 31,145.05 : x
  2. Step 2: Convert to fraction form
    73,265.05/109,811.18 = 31,145.05/x
  3. Step 3: Cross multiply
    73,265.05x = 109,811.18 × 31,145.05
  4. Step 4: Simplify right side
    73,265.05x = 3,420,074,535.93
  5. Step 5: Solve for x
    x = 3,420,074,535.93/73,265.05
  6. Step 6: Final answer
    x = 46,680.85

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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.