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Finding the Fourth Proportional to 86,627.70, 129,960.45 and 49,205.70

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Solution

The fourth proportional to 86,627.70, 129,960.45 and 49,205.70 is: 73,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,627.70 : 129,960.45 = 49,205.70 : x
  2. Step 2: Convert to fraction form
    86,627.70/129,960.45 = 49,205.70/x
  3. Step 3: Cross multiply
    86,627.70x = 129,960.45 × 49,205.70
  4. Step 4: Simplify right side
    86,627.70x = 6,394,794,914.57
  5. Step 5: Solve for x
    x = 6,394,794,914.57/86,627.70
  6. Step 6: Final answer
    x = 73,819.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.