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Finding the Fourth Proportional to 66,615.28, 91,927.99 and 36,399.95

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Solution

The fourth proportional to 66,615.28, 91,927.99 and 36,399.95 is: 50,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.28 : 91,927.99 = 36,399.95 : x
  2. Step 2: Convert to fraction form
    66,615.28/91,927.99 = 36,399.95/x
  3. Step 3: Cross multiply
    66,615.28x = 91,927.99 × 36,399.95
  4. Step 4: Simplify right side
    66,615.28x = 3,346,174,239.60
  5. Step 5: Solve for x
    x = 3,346,174,239.60/66,615.28
  6. Step 6: Final answer
    x = 50,231.33

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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.