Home / 81,660.24-122,376.24-44,139.40

Finding the Fourth Proportional to 81,660.24, 122,376.24 and 44,139.40

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Solution

The fourth proportional to 81,660.24, 122,376.24 and 44,139.40 is: 66,147.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,660.24 : 122,376.24 = 44,139.40 : x
  2. Step 2: Convert to fraction form
    81,660.24/122,376.24 = 44,139.40/x
  3. Step 3: Cross multiply
    81,660.24x = 122,376.24 × 44,139.40
  4. Step 4: Simplify right side
    81,660.24x = 5,401,613,807.86
  5. Step 5: Solve for x
    x = 5,401,613,807.86/81,660.24
  6. Step 6: Final answer
    x = 66,147.42

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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.