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Finding the Fourth Proportional to 72,589.01, 108,884.06 and 20,001.38

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Solution

The fourth proportional to 72,589.01, 108,884.06 and 20,001.38 is: 30,002.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,589.01 : 108,884.06 = 20,001.38 : x
  2. Step 2: Convert to fraction form
    72,589.01/108,884.06 = 20,001.38/x
  3. Step 3: Cross multiply
    72,589.01x = 108,884.06 × 20,001.38
  4. Step 4: Simplify right side
    72,589.01x = 2,177,831,360.00
  5. Step 5: Solve for x
    x = 2,177,831,360.00/72,589.01
  6. Step 6: Final answer
    x = 30,002.22

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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.