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Finding the Fourth Proportional to 69,812.42, 104,645.72 and 30,358.94

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Solution

The fourth proportional to 69,812.42, 104,645.72 and 30,358.94 is: 45,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,812.42 : 104,645.72 = 30,358.94 : x
  2. Step 2: Convert to fraction form
    69,812.42/104,645.72 = 30,358.94/x
  3. Step 3: Cross multiply
    69,812.42x = 104,645.72 × 30,358.94
  4. Step 4: Simplify right side
    69,812.42x = 3,176,932,687.41
  5. Step 5: Solve for x
    x = 3,176,932,687.41/69,812.42
  6. Step 6: Final answer
    x = 45,506.70

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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.