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Finding the Fourth Proportional to 68,707.81, 103,060.41 and 21,960.67

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Solution

The fourth proportional to 68,707.81, 103,060.41 and 21,960.67 is: 32,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.81 : 103,060.41 = 21,960.67 : x
  2. Step 2: Convert to fraction form
    68,707.81/103,060.41 = 21,960.67/x
  3. Step 3: Cross multiply
    68,707.81x = 103,060.41 × 21,960.67
  4. Step 4: Simplify right side
    68,707.81x = 2,263,275,654.07
  5. Step 5: Solve for x
    x = 2,263,275,654.07/68,707.81
  6. Step 6: Final answer
    x = 32,940.59

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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.