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Finding the Fourth Proportional to 72,654.07, 108,983.16 and 20,063.56

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Solution

The fourth proportional to 72,654.07, 108,983.16 and 20,063.56 is: 30,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,654.07 : 108,983.16 = 20,063.56 : x
  2. Step 2: Convert to fraction form
    72,654.07/108,983.16 = 20,063.56/x
  3. Step 3: Cross multiply
    72,654.07x = 108,983.16 × 20,063.56
  4. Step 4: Simplify right side
    72,654.07x = 2,186,589,851.45
  5. Step 5: Solve for x
    x = 2,186,589,851.45/72,654.07
  6. Step 6: Final answer
    x = 30,095.90

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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.