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Finding the Fourth Proportional to 69,387.39, 95,749.11 and 39,180.06

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Solution

The fourth proportional to 69,387.39, 95,749.11 and 39,180.06 is: 54,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,387.39 : 95,749.11 = 39,180.06 : x
  2. Step 2: Convert to fraction form
    69,387.39/95,749.11 = 39,180.06/x
  3. Step 3: Cross multiply
    69,387.39x = 95,749.11 × 39,180.06
  4. Step 4: Simplify right side
    69,387.39x = 3,751,455,874.75
  5. Step 5: Solve for x
    x = 3,751,455,874.75/69,387.39
  6. Step 6: Final answer
    x = 54,065.38

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1.5x scale

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.