Home / 61,741.28-85,171.92-40,517.60

Finding the Fourth Proportional to 61,741.28, 85,171.92 and 40,517.60

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Solution

The fourth proportional to 61,741.28, 85,171.92 and 40,517.60 is: 55,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,741.28 : 85,171.92 = 40,517.60 : x
  2. Step 2: Convert to fraction form
    61,741.28/85,171.92 = 40,517.60/x
  3. Step 3: Cross multiply
    61,741.28x = 85,171.92 × 40,517.60
  4. Step 4: Simplify right side
    61,741.28x = 3,450,961,785.79
  5. Step 5: Solve for x
    x = 3,450,961,785.79/61,741.28
  6. Step 6: Final answer
    x = 55,893.91

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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.