Home / 84,645.20-116,786.75-66,684.47

Finding the Fourth Proportional to 84,645.20, 116,786.75 and 66,684.47

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Solution

The fourth proportional to 84,645.20, 116,786.75 and 66,684.47 is: 92,005.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,645.20 : 116,786.75 = 66,684.47 : x
  2. Step 2: Convert to fraction form
    84,645.20/116,786.75 = 66,684.47/x
  3. Step 3: Cross multiply
    84,645.20x = 116,786.75 × 66,684.47
  4. Step 4: Simplify right side
    84,645.20x = 7,787,861,609.42
  5. Step 5: Solve for x
    x = 7,787,861,609.42/84,645.20
  6. Step 6: Final answer
    x = 92,005.94

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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.