Home / 65,749.41-90,735.81-39,908.25

Finding the Fourth Proportional to 65,749.41, 90,735.81 and 39,908.25

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Solution

The fourth proportional to 65,749.41, 90,735.81 and 39,908.25 is: 55,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,749.41 : 90,735.81 = 39,908.25 : x
  2. Step 2: Convert to fraction form
    65,749.41/90,735.81 = 39,908.25/x
  3. Step 3: Cross multiply
    65,749.41x = 90,735.81 × 39,908.25
  4. Step 4: Simplify right side
    65,749.41x = 3,621,107,389.43
  5. Step 5: Solve for x
    x = 3,621,107,389.43/65,749.41
  6. Step 6: Final answer
    x = 55,074.37

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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.