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Finding the Fourth Proportional to 61,694.81, 92,596.21 and 30,128.20

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Solution

The fourth proportional to 61,694.81, 92,596.21 and 30,128.20 is: 45,218.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,694.81 : 92,596.21 = 30,128.20 : x
  2. Step 2: Convert to fraction form
    61,694.81/92,596.21 = 30,128.20/x
  3. Step 3: Cross multiply
    61,694.81x = 92,596.21 × 30,128.20
  4. Step 4: Simplify right side
    61,694.81x = 2,789,757,517.64
  5. Step 5: Solve for x
    x = 2,789,757,517.64/61,694.81
  6. Step 6: Final answer
    x = 45,218.67

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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.