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Finding the Fourth Proportional to 69,687.48, 104,453.42 and 30,185.40

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Solution

The fourth proportional to 69,687.48, 104,453.42 and 30,185.40 is: 45,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,687.48 : 104,453.42 = 30,185.40 : x
  2. Step 2: Convert to fraction form
    69,687.48/104,453.42 = 30,185.40/x
  3. Step 3: Cross multiply
    69,687.48x = 104,453.42 × 30,185.40
  4. Step 4: Simplify right side
    69,687.48x = 3,152,968,264.07
  5. Step 5: Solve for x
    x = 3,152,968,264.07/69,687.48
  6. Step 6: Final answer
    x = 45,244.40

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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.