Home / 66,440.21-91,685.79-36,225.59

Finding the Fourth Proportional to 66,440.21, 91,685.79 and 36,225.59

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Solution

The fourth proportional to 66,440.21, 91,685.79 and 36,225.59 is: 49,990.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.21 : 91,685.79 = 36,225.59 : x
  2. Step 2: Convert to fraction form
    66,440.21/91,685.79 = 36,225.59/x
  3. Step 3: Cross multiply
    66,440.21x = 91,685.79 × 36,225.59
  4. Step 4: Simplify right side
    66,440.21x = 3,321,371,378.94
  5. Step 5: Solve for x
    x = 3,321,371,378.94/66,440.21
  6. Step 6: Final answer
    x = 49,990.38

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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.