Home / 81,201.42-121,718.76-41,146.38

Finding the Fourth Proportional to 81,201.42, 121,718.76 and 41,146.38

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Solution

The fourth proportional to 81,201.42, 121,718.76 and 41,146.38 is: 61,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,201.42 : 121,718.76 = 41,146.38 : x
  2. Step 2: Convert to fraction form
    81,201.42/121,718.76 = 41,146.38/x
  3. Step 3: Cross multiply
    81,201.42x = 121,718.76 × 41,146.38
  4. Step 4: Simplify right side
    81,201.42x = 5,008,286,352.09
  5. Step 5: Solve for x
    x = 5,008,286,352.09/81,201.42
  6. Step 6: Final answer
    x = 61,677.32

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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.