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Finding the Fourth Proportional to 92,960.87, 128,286.99 and 50,519.40

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Solution

The fourth proportional to 92,960.87, 128,286.99 and 50,519.40 is: 69,717.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,960.87 : 128,286.99 = 50,519.40 : x
  2. Step 2: Convert to fraction form
    92,960.87/128,286.99 = 50,519.40/x
  3. Step 3: Cross multiply
    92,960.87x = 128,286.99 × 50,519.40
  4. Step 4: Simplify right side
    92,960.87x = 6,480,981,281.53
  5. Step 5: Solve for x
    x = 6,480,981,281.53/92,960.87
  6. Step 6: Final answer
    x = 69,717.31

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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.