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Finding the Fourth Proportional to 69,709, 104,504.70 and 30,236.38

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Solution

The fourth proportional to 69,709, 104,504.70 and 30,236.38 is: 45,329.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,709 : 104,504.70 = 30,236.38 : x
  2. Step 2: Convert to fraction form
    69,709/104,504.70 = 30,236.38/x
  3. Step 3: Cross multiply
    69,709x = 104,504.70 × 30,236.38
  4. Step 4: Simplify right side
    69,709x = 3,159,843,820.99
  5. Step 5: Solve for x
    x = 3,159,843,820.99/69,709
  6. Step 6: Final answer
    x = 45,329.07

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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.