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Finding the Fourth Proportional to 69,814.76, 103,932.46 and 69,399.56

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Solution

The fourth proportional to 69,814.76, 103,932.46 and 69,399.56 is: 103,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,814.76 : 103,932.46 = 69,399.56 : x
  2. Step 2: Convert to fraction form
    69,814.76/103,932.46 = 69,399.56/x
  3. Step 3: Cross multiply
    69,814.76x = 103,932.46 × 69,399.56
  4. Step 4: Simplify right side
    69,814.76x = 7,212,866,993.72
  5. Step 5: Solve for x
    x = 7,212,866,993.72/69,814.76
  6. Step 6: Final answer
    x = 103,314.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.