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Finding the Fourth Proportional to 66,849.99, 100,163.81 and 47,086.80

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Solution

The fourth proportional to 66,849.99, 100,163.81 and 47,086.80 is: 70,551.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,849.99 : 100,163.81 = 47,086.80 : x
  2. Step 2: Convert to fraction form
    66,849.99/100,163.81 = 47,086.80/x
  3. Step 3: Cross multiply
    66,849.99x = 100,163.81 × 47,086.80
  4. Step 4: Simplify right side
    66,849.99x = 4,716,393,053.27
  5. Step 5: Solve for x
    x = 4,716,393,053.27/66,849.99
  6. Step 6: Final answer
    x = 70,551.89

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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.