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Finding the Fourth Proportional to 66,615.03, 91,927.64 and 36,399.71

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Solution

The fourth proportional to 66,615.03, 91,927.64 and 36,399.71 is: 50,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.03 : 91,927.64 = 36,399.71 : x
  2. Step 2: Convert to fraction form
    66,615.03/91,927.64 = 36,399.71/x
  3. Step 3: Cross multiply
    66,615.03x = 91,927.64 × 36,399.71
  4. Step 4: Simplify right side
    66,615.03x = 3,346,138,795.35
  5. Step 5: Solve for x
    x = 3,346,138,795.35/66,615.03
  6. Step 6: Final answer
    x = 50,230.99

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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.