Home / 66,768.14-92,133.78-39,905.30

Finding the Fourth Proportional to 66,768.14, 92,133.78 and 39,905.30

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Solution

The fourth proportional to 66,768.14, 92,133.78 and 39,905.30 is: 55,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,768.14 : 92,133.78 = 39,905.30 : x
  2. Step 2: Convert to fraction form
    66,768.14/92,133.78 = 39,905.30/x
  3. Step 3: Cross multiply
    66,768.14x = 92,133.78 × 39,905.30
  4. Step 4: Simplify right side
    66,768.14x = 3,676,626,131.03
  5. Step 5: Solve for x
    x = 3,676,626,131.03/66,768.14
  6. Step 6: Final answer
    x = 55,065.58

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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.