Home / 81,984.60-122,976.09-26,580.60

Finding the Fourth Proportional to 81,984.60, 122,976.09 and 26,580.60

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Solution

The fourth proportional to 81,984.60, 122,976.09 and 26,580.60 is: 39,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,984.60 : 122,976.09 = 26,580.60 : x
  2. Step 2: Convert to fraction form
    81,984.60/122,976.09 = 26,580.60/x
  3. Step 3: Cross multiply
    81,984.60x = 122,976.09 × 26,580.60
  4. Step 4: Simplify right side
    81,984.60x = 3,268,778,257.85
  5. Step 5: Solve for x
    x = 3,268,778,257.85/81,984.60
  6. Step 6: Final answer
    x = 39,870.64

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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.