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Finding the Fourth Proportional to 72,371.79, 108,556.65 and 32,380.20

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Solution

The fourth proportional to 72,371.79, 108,556.65 and 32,380.20 is: 48,569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,371.79 : 108,556.65 = 32,380.20 : x
  2. Step 2: Convert to fraction form
    72,371.79/108,556.65 = 32,380.20/x
  3. Step 3: Cross multiply
    72,371.79x = 108,556.65 × 32,380.20
  4. Step 4: Simplify right side
    72,371.79x = 3,515,086,038.33
  5. Step 5: Solve for x
    x = 3,515,086,038.33/72,371.79
  6. Step 6: Final answer
    x = 48,569.84

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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.