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Finding the Fourth Proportional to 66,634.99, 91,954.91 and 36,420.54

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Solution

The fourth proportional to 66,634.99, 91,954.91 and 36,420.54 is: 50,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,634.99 : 91,954.91 = 36,420.54 : x
  2. Step 2: Convert to fraction form
    66,634.99/91,954.91 = 36,420.54/x
  3. Step 3: Cross multiply
    66,634.99x = 91,954.91 × 36,420.54
  4. Step 4: Simplify right side
    66,634.99x = 3,349,047,224.07
  5. Step 5: Solve for x
    x = 3,349,047,224.07/66,634.99
  6. Step 6: Final answer
    x = 50,259.59

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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.