Home / 40,163.36-55,431.96-38,391.62

Finding the Fourth Proportional to 40,163.36, 55,431.96 and 38,391.62

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Solution

The fourth proportional to 40,163.36, 55,431.96 and 38,391.62 is: 52,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,163.36 : 55,431.96 = 38,391.62 : x
  2. Step 2: Convert to fraction form
    40,163.36/55,431.96 = 38,391.62/x
  3. Step 3: Cross multiply
    40,163.36x = 55,431.96 × 38,391.62
  4. Step 4: Simplify right side
    40,163.36x = 2,128,122,744.18
  5. Step 5: Solve for x
    x = 2,128,122,744.18/40,163.36
  6. Step 6: Final answer
    x = 52,986.67

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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.