Home / 81,268.63-112,162.68-49,431.37

Finding the Fourth Proportional to 81,268.63, 112,162.68 and 49,431.37

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Solution

The fourth proportional to 81,268.63, 112,162.68 and 49,431.37 is: 68,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,268.63 : 112,162.68 = 49,431.37 : x
  2. Step 2: Convert to fraction form
    81,268.63/112,162.68 = 49,431.37/x
  3. Step 3: Cross multiply
    81,268.63x = 112,162.68 × 49,431.37
  4. Step 4: Simplify right side
    81,268.63x = 5,544,354,935.27
  5. Step 5: Solve for x
    x = 5,544,354,935.27/81,268.63
  6. Step 6: Final answer
    x = 68,222.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.