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Finding the Fourth Proportional to 27,078.62, 40,625.18 and 8,357.90

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Solution

The fourth proportional to 27,078.62, 40,625.18 and 8,357.90 is: 12,539.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,078.62 : 40,625.18 = 8,357.90 : x
  2. Step 2: Convert to fraction form
    27,078.62/40,625.18 = 8,357.90/x
  3. Step 3: Cross multiply
    27,078.62x = 40,625.18 × 8,357.90
  4. Step 4: Simplify right side
    27,078.62x = 339,541,293.48
  5. Step 5: Solve for x
    x = 339,541,293.48/27,078.62
  6. Step 6: Final answer
    x = 12,539.09

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1.5x scale

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.