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Finding the Fourth Proportional to 69,216.74, 103,674.31 and 45,497.51

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Solution

The fourth proportional to 69,216.74, 103,674.31 and 45,497.51 is: 68,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,216.74 : 103,674.31 = 45,497.51 : x
  2. Step 2: Convert to fraction form
    69,216.74/103,674.31 = 45,497.51/x
  3. Step 3: Cross multiply
    69,216.74x = 103,674.31 × 45,497.51
  4. Step 4: Simplify right side
    69,216.74x = 4,716,922,712.63
  5. Step 5: Solve for x
    x = 4,716,922,712.63/69,216.74
  6. Step 6: Final answer
    x = 68,147.14

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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.