Home / 81,217.56-121,743.36-46,083

Finding the Fourth Proportional to 81,217.56, 121,743.36 and 46,083

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Solution

The fourth proportional to 81,217.56, 121,743.36 and 46,083 is: 69,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.56 : 121,743.36 = 46,083 : x
  2. Step 2: Convert to fraction form
    81,217.56/121,743.36 = 46,083/x
  3. Step 3: Cross multiply
    81,217.56x = 121,743.36 × 46,083
  4. Step 4: Simplify right side
    81,217.56x = 5,610,299,258.88
  5. Step 5: Solve for x
    x = 5,610,299,258.88/81,217.56
  6. Step 6: Final answer
    x = 69,077.42

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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.