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Finding the Fourth Proportional to 66,554.50, 91,942.37 and 57,586.43

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Solution

The fourth proportional to 66,554.50, 91,942.37 and 57,586.43 is: 79,553.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,554.50 : 91,942.37 = 57,586.43 : x
  2. Step 2: Convert to fraction form
    66,554.50/91,942.37 = 57,586.43/x
  3. Step 3: Cross multiply
    66,554.50x = 91,942.37 × 57,586.43
  4. Step 4: Simplify right side
    66,554.50x = 5,294,632,854.04
  5. Step 5: Solve for x
    x = 5,294,632,854.04/66,554.50
  6. Step 6: Final answer
    x = 79,553.34

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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.