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Finding the Fourth Proportional to 77,750.72, 107,197.88 and 50,850.60

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Solution

The fourth proportional to 77,750.72, 107,197.88 and 50,850.60 is: 70,109.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,750.72 : 107,197.88 = 50,850.60 : x
  2. Step 2: Convert to fraction form
    77,750.72/107,197.88 = 50,850.60/x
  3. Step 3: Cross multiply
    77,750.72x = 107,197.88 × 50,850.60
  4. Step 4: Simplify right side
    77,750.72x = 5,451,076,516.73
  5. Step 5: Solve for x
    x = 5,451,076,516.73/77,750.72
  6. Step 6: Final answer
    x = 70,109.66

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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.