Home / 86,105.57-118,821.97-47,865.03

Finding the Fourth Proportional to 86,105.57, 118,821.97 and 47,865.03

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Solution

The fourth proportional to 86,105.57, 118,821.97 and 47,865.03 is: 66,051.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,105.57 : 118,821.97 = 47,865.03 : x
  2. Step 2: Convert to fraction form
    86,105.57/118,821.97 = 47,865.03/x
  3. Step 3: Cross multiply
    86,105.57x = 118,821.97 × 47,865.03
  4. Step 4: Simplify right side
    86,105.57x = 5,687,416,772.96
  5. Step 5: Solve for x
    x = 5,687,416,772.96/86,105.57
  6. Step 6: Final answer
    x = 66,051.67

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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.