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Finding the Fourth Proportional to 69,279, 103,914.74 and 27,166.64

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Solution

The fourth proportional to 69,279, 103,914.74 and 27,166.64 is: 40,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,279 : 103,914.74 = 27,166.64 : x
  2. Step 2: Convert to fraction form
    69,279/103,914.74 = 27,166.64/x
  3. Step 3: Cross multiply
    69,279x = 103,914.74 × 27,166.64
  4. Step 4: Simplify right side
    69,279x = 2,823,014,332.27
  5. Step 5: Solve for x
    x = 2,823,014,332.27/69,279
  6. Step 6: Final answer
    x = 40,748.49

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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.