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Finding the Fourth Proportional to 78,771.37, 118,156.86 and 33,763.54

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Solution

The fourth proportional to 78,771.37, 118,156.86 and 33,763.54 is: 50,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,771.37 : 118,156.86 = 33,763.54 : x
  2. Step 2: Convert to fraction form
    78,771.37/118,156.86 = 33,763.54/x
  3. Step 3: Cross multiply
    78,771.37x = 118,156.86 × 33,763.54
  4. Step 4: Simplify right side
    78,771.37x = 3,989,393,913.73
  5. Step 5: Solve for x
    x = 3,989,393,913.73/78,771.37
  6. Step 6: Final answer
    x = 50,645.22

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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.