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Finding the Fourth Proportional to 72,223.35, 108,324.09 and 18,916.44

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Solution

The fourth proportional to 72,223.35, 108,324.09 and 18,916.44 is: 28,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,223.35 : 108,324.09 = 18,916.44 : x
  2. Step 2: Convert to fraction form
    72,223.35/108,324.09 = 18,916.44/x
  3. Step 3: Cross multiply
    72,223.35x = 108,324.09 × 18,916.44
  4. Step 4: Simplify right side
    72,223.35x = 2,049,106,149.04
  5. Step 5: Solve for x
    x = 2,049,106,149.04/72,223.35
  6. Step 6: Final answer
    x = 28,371.80

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1.5x scale

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.