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Finding the Fourth Proportional to 66,072.40, 91,184.40 and 37,392.02

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Solution

The fourth proportional to 66,072.40, 91,184.40 and 37,392.02 is: 51,603.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,072.40 : 91,184.40 = 37,392.02 : x
  2. Step 2: Convert to fraction form
    66,072.40/91,184.40 = 37,392.02/x
  3. Step 3: Cross multiply
    66,072.40x = 91,184.40 × 37,392.02
  4. Step 4: Simplify right side
    66,072.40x = 3,409,568,908.49
  5. Step 5: Solve for x
    x = 3,409,568,908.49/66,072.40
  6. Step 6: Final answer
    x = 51,603.53

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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.