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Finding the Fourth Proportional to 73,148.70, 109,723.04 and 20,558.18

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Solution

The fourth proportional to 73,148.70, 109,723.04 and 20,558.18 is: 30,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,148.70 : 109,723.04 = 20,558.18 : x
  2. Step 2: Convert to fraction form
    73,148.70/109,723.04 = 20,558.18/x
  3. Step 3: Cross multiply
    73,148.70x = 109,723.04 × 20,558.18
  4. Step 4: Simplify right side
    73,148.70x = 2,255,706,033.21
  5. Step 5: Solve for x
    x = 2,255,706,033.21/73,148.70
  6. Step 6: Final answer
    x = 30,837.27

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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.