Home / 71,974.49-99,324.93-40,145.45

Finding the Fourth Proportional to 71,974.49, 99,324.93 and 40,145.45

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Solution

The fourth proportional to 71,974.49, 99,324.93 and 40,145.45 is: 55,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.49 : 99,324.93 = 40,145.45 : x
  2. Step 2: Convert to fraction form
    71,974.49/99,324.93 = 40,145.45/x
  3. Step 3: Cross multiply
    71,974.49x = 99,324.93 × 40,145.45
  4. Step 4: Simplify right side
    71,974.49x = 3,987,443,514.44
  5. Step 5: Solve for x
    x = 3,987,443,514.44/71,974.49
  6. Step 6: Final answer
    x = 55,400.79

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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.