Home / 81,668.43-112,653.55-51,401.21

Finding the Fourth Proportional to 81,668.43, 112,653.55 and 51,401.21

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Solution

The fourth proportional to 81,668.43, 112,653.55 and 51,401.21 is: 70,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668.43 : 112,653.55 = 51,401.21 : x
  2. Step 2: Convert to fraction form
    81,668.43/112,653.55 = 51,401.21/x
  3. Step 3: Cross multiply
    81,668.43x = 112,653.55 × 51,401.21
  4. Step 4: Simplify right side
    81,668.43x = 5,790,528,281.78
  5. Step 5: Solve for x
    x = 5,790,528,281.78/81,668.43
  6. Step 6: Final answer
    x = 70,902.90

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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.