Home / 66,370.05-91,583.87-39,513.69

Finding the Fourth Proportional to 66,370.05, 91,583.87 and 39,513.69

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Solution

The fourth proportional to 66,370.05, 91,583.87 and 39,513.69 is: 54,524.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.05 : 91,583.87 = 39,513.69 : x
  2. Step 2: Convert to fraction form
    66,370.05/91,583.87 = 39,513.69/x
  3. Step 3: Cross multiply
    66,370.05x = 91,583.87 × 39,513.69
  4. Step 4: Simplify right side
    66,370.05x = 3,618,816,450.61
  5. Step 5: Solve for x
    x = 3,618,816,450.61/66,370.05
  6. Step 6: Final answer
    x = 54,524.84

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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.