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Finding the Fourth Proportional to 66,553.50, 91,940.99 and 57,585.43

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Solution

The fourth proportional to 66,553.50, 91,940.99 and 57,585.43 is: 79,551.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.50 : 91,940.99 = 57,585.43 : x
  2. Step 2: Convert to fraction form
    66,553.50/91,940.99 = 57,585.43/x
  3. Step 3: Cross multiply
    66,553.50x = 91,940.99 × 57,585.43
  4. Step 4: Simplify right side
    66,553.50x = 5,294,461,351.75
  5. Step 5: Solve for x
    x = 5,294,461,351.75/66,553.50
  6. Step 6: Final answer
    x = 79,551.96

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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.