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Finding the Fourth Proportional to 66,072.51, 91,173.87 and 37,394.80

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Solution

The fourth proportional to 66,072.51, 91,173.87 and 37,394.80 is: 51,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,072.51 : 91,173.87 = 37,394.80 : x
  2. Step 2: Convert to fraction form
    66,072.51/91,173.87 = 37,394.80/x
  3. Step 3: Cross multiply
    66,072.51x = 91,173.87 × 37,394.80
  4. Step 4: Simplify right side
    66,072.51x = 3,409,428,405.94
  5. Step 5: Solve for x
    x = 3,409,428,405.94/66,072.51
  6. Step 6: Final answer
    x = 51,601.32

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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.