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Finding the Fourth Proportional to 71,679.07, 98,923.10 and 39,850.93

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Solution

The fourth proportional to 71,679.07, 98,923.10 and 39,850.93 is: 54,997.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,679.07 : 98,923.10 = 39,850.93 : x
  2. Step 2: Convert to fraction form
    71,679.07/98,923.10 = 39,850.93/x
  3. Step 3: Cross multiply
    71,679.07x = 98,923.10 × 39,850.93
  4. Step 4: Simplify right side
    71,679.07x = 3,942,177,533.48
  5. Step 5: Solve for x
    x = 3,942,177,533.48/71,679.07
  6. Step 6: Final answer
    x = 54,997.61

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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.