Home / 81,236.72-112,119.36-49,415.60

Finding the Fourth Proportional to 81,236.72, 112,119.36 and 49,415.60

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Solution

The fourth proportional to 81,236.72, 112,119.36 and 49,415.60 is: 68,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,236.72 : 112,119.36 = 49,415.60 : x
  2. Step 2: Convert to fraction form
    81,236.72/112,119.36 = 49,415.60/x
  3. Step 3: Cross multiply
    81,236.72x = 112,119.36 × 49,415.60
  4. Step 4: Simplify right side
    81,236.72x = 5,540,445,446.02
  5. Step 5: Solve for x
    x = 5,540,445,446.02/81,236.72
  6. Step 6: Final answer
    x = 68,201.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.