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Finding the Fourth Proportional to 66,472.38, 91,762.48 and 57,361.50

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Solution

The fourth proportional to 66,472.38, 91,762.48 and 57,361.50 is: 79,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.38 : 91,762.48 = 57,361.50 : x
  2. Step 2: Convert to fraction form
    66,472.38/91,762.48 = 57,361.50/x
  3. Step 3: Cross multiply
    66,472.38x = 91,762.48 × 57,361.50
  4. Step 4: Simplify right side
    66,472.38x = 5,263,633,496.52
  5. Step 5: Solve for x
    x = 5,263,633,496.52/66,472.38
  6. Step 6: Final answer
    x = 79,185.27

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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.