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Finding the Fourth Proportional to 61,324.40, 91,986.60 and 49,660.40

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Solution

The fourth proportional to 61,324.40, 91,986.60 and 49,660.40 is: 74,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,324.40 : 91,986.60 = 49,660.40 : x
  2. Step 2: Convert to fraction form
    61,324.40/91,986.60 = 49,660.40/x
  3. Step 3: Cross multiply
    61,324.40x = 91,986.60 × 49,660.40
  4. Step 4: Simplify right side
    61,324.40x = 4,568,091,350.64
  5. Step 5: Solve for x
    x = 4,568,091,350.64/61,324.40
  6. Step 6: Final answer
    x = 74,490.60

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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.