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Finding the Fourth Proportional to 69,138.92, 95,404.41 and 38,923.70

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Solution

The fourth proportional to 69,138.92, 95,404.41 and 38,923.70 is: 53,710.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138.92 : 95,404.41 = 38,923.70 : x
  2. Step 2: Convert to fraction form
    69,138.92/95,404.41 = 38,923.70/x
  3. Step 3: Cross multiply
    69,138.92x = 95,404.41 × 38,923.70
  4. Step 4: Simplify right side
    69,138.92x = 3,713,492,156.49
  5. Step 5: Solve for x
    x = 3,713,492,156.49/69,138.92
  6. Step 6: Final answer
    x = 53,710.59

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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.