Home / 65,357.55-90,154.22-40,163.31

Finding the Fourth Proportional to 65,357.55, 90,154.22 and 40,163.31

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Solution

The fourth proportional to 65,357.55, 90,154.22 and 40,163.31 is: 55,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,357.55 : 90,154.22 = 40,163.31 : x
  2. Step 2: Convert to fraction form
    65,357.55/90,154.22 = 40,163.31/x
  3. Step 3: Cross multiply
    65,357.55x = 90,154.22 × 40,163.31
  4. Step 4: Simplify right side
    65,357.55x = 3,620,891,684.85
  5. Step 5: Solve for x
    x = 3,620,891,684.85/65,357.55
  6. Step 6: Final answer
    x = 55,401.28

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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.