Home / 66,619.87-91,935.68-36,405.21

Finding the Fourth Proportional to 66,619.87, 91,935.68 and 36,405.21

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Solution

The fourth proportional to 66,619.87, 91,935.68 and 36,405.21 is: 50,239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,619.87 : 91,935.68 = 36,405.21 : x
  2. Step 2: Convert to fraction form
    66,619.87/91,935.68 = 36,405.21/x
  3. Step 3: Cross multiply
    66,619.87x = 91,935.68 × 36,405.21
  4. Step 4: Simplify right side
    66,619.87x = 3,346,937,736.89
  5. Step 5: Solve for x
    x = 3,346,937,736.89/66,619.87
  6. Step 6: Final answer
    x = 50,239.33

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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.