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Finding the Fourth Proportional to 72,593.01, 108,890.07 and 20,005.38

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Solution

The fourth proportional to 72,593.01, 108,890.07 and 20,005.38 is: 30,008.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,593.01 : 108,890.07 = 20,005.38 : x
  2. Step 2: Convert to fraction form
    72,593.01/108,890.07 = 20,005.38/x
  3. Step 3: Cross multiply
    72,593.01x = 108,890.07 × 20,005.38
  4. Step 4: Simplify right side
    72,593.01x = 2,178,387,228.58
  5. Step 5: Solve for x
    x = 2,178,387,228.58/72,593.01
  6. Step 6: Final answer
    x = 30,008.22

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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.