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Finding the Fourth Proportional to 69,709.99, 104,506.21 and 30,237.39

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Solution

The fourth proportional to 69,709.99, 104,506.21 and 30,237.39 is: 45,330.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,709.99 : 104,506.21 = 30,237.39 : x
  2. Step 2: Convert to fraction form
    69,709.99/104,506.21 = 30,237.39/x
  3. Step 3: Cross multiply
    69,709.99x = 104,506.21 × 30,237.39
  4. Step 4: Simplify right side
    69,709.99x = 3,159,995,029.19
  5. Step 5: Solve for x
    x = 3,159,995,029.19/69,709.99
  6. Step 6: Final answer
    x = 45,330.59

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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.