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Finding the Fourth Proportional to 27,129.40, 40,694.10 and 27,129.40

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Solution

The fourth proportional to 27,129.40, 40,694.10 and 27,129.40 is: 40,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129.40 : 40,694.10 = 27,129.40 : x
  2. Step 2: Convert to fraction form
    27,129.40/40,694.10 = 27,129.40/x
  3. Step 3: Cross multiply
    27,129.40x = 40,694.10 × 27,129.40
  4. Step 4: Simplify right side
    27,129.40x = 1,104,006,516.54
  5. Step 5: Solve for x
    x = 1,104,006,516.54/27,129.40
  6. Step 6: Final answer
    x = 40,694.10

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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.