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Finding the Fourth Proportional to 69,087, 95,340.06 and 39,279

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Solution

The fourth proportional to 69,087, 95,340.06 and 39,279 is: 54,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,087 : 95,340.06 = 39,279 : x
  2. Step 2: Convert to fraction form
    69,087/95,340.06 = 39,279/x
  3. Step 3: Cross multiply
    69,087x = 95,340.06 × 39,279
  4. Step 4: Simplify right side
    69,087x = 3,744,862,216.74
  5. Step 5: Solve for x
    x = 3,744,862,216.74/69,087
  6. Step 6: Final answer
    x = 54,205.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.