Home / 71,975.56-99,326.28-40,144.48

Finding the Fourth Proportional to 71,975.56, 99,326.28 and 40,144.48

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Solution

The fourth proportional to 71,975.56, 99,326.28 and 40,144.48 is: 55,399.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.56 : 99,326.28 = 40,144.48 : x
  2. Step 2: Convert to fraction form
    71,975.56/99,326.28 = 40,144.48/x
  3. Step 3: Cross multiply
    71,975.56x = 99,326.28 × 40,144.48
  4. Step 4: Simplify right side
    71,975.56x = 3,987,401,860.93
  5. Step 5: Solve for x
    x = 3,987,401,860.93/71,975.56
  6. Step 6: Final answer
    x = 55,399.39

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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.