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Finding the Fourth Proportional to 27,079.29, 40,622.81 and 8,360.87

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Solution

The fourth proportional to 27,079.29, 40,622.81 and 8,360.87 is: 12,542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,079.29 : 40,622.81 = 8,360.87 : x
  2. Step 2: Convert to fraction form
    27,079.29/40,622.81 = 8,360.87/x
  3. Step 3: Cross multiply
    27,079.29x = 40,622.81 × 8,360.87
  4. Step 4: Simplify right side
    27,079.29x = 339,641,788.53
  5. Step 5: Solve for x
    x = 339,641,788.53/27,079.29
  6. Step 6: Final answer
    x = 12,542.49

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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.