Home / 81,394.26-122,111.38-65,741.15

Finding the Fourth Proportional to 81,394.26, 122,111.38 and 65,741.15

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Solution

The fourth proportional to 81,394.26, 122,111.38 and 65,741.15 is: 98,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.26 : 122,111.38 = 65,741.15 : x
  2. Step 2: Convert to fraction form
    81,394.26/122,111.38 = 65,741.15/x
  3. Step 3: Cross multiply
    81,394.26x = 122,111.38 × 65,741.15
  4. Step 4: Simplify right side
    81,394.26x = 8,027,742,109.03
  5. Step 5: Solve for x
    x = 8,027,742,109.03/81,394.26
  6. Step 6: Final answer
    x = 98,627.86

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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.