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Finding the Fourth Proportional to 57,745.75, 86,618.63 and 13,969.75

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Solution

The fourth proportional to 57,745.75, 86,618.63 and 13,969.75 is: 20,954.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,745.75 : 86,618.63 = 13,969.75 : x
  2. Step 2: Convert to fraction form
    57,745.75/86,618.63 = 13,969.75/x
  3. Step 3: Cross multiply
    57,745.75x = 86,618.63 × 13,969.75
  4. Step 4: Simplify right side
    57,745.75x = 1,210,040,536.59
  5. Step 5: Solve for x
    x = 1,210,040,536.59/57,745.75
  6. Step 6: Final answer
    x = 20,954.63

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1.5x scale

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.