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Finding the Fourth Proportional to 73,103.46, 109,659.06 and 20,517.03

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Solution

The fourth proportional to 73,103.46, 109,659.06 and 20,517.03 is: 30,776.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,103.46 : 109,659.06 = 20,517.03 : x
  2. Step 2: Convert to fraction form
    73,103.46/109,659.06 = 20,517.03/x
  3. Step 3: Cross multiply
    73,103.46x = 109,659.06 × 20,517.03
  4. Step 4: Simplify right side
    73,103.46x = 2,249,878,223.79
  5. Step 5: Solve for x
    x = 2,249,878,223.79/73,103.46
  6. Step 6: Final answer
    x = 30,776.63

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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.