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Finding the Fourth Proportional to 66,617.66, 91,931.27 and 36,402.32

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Solution

The fourth proportional to 66,617.66, 91,931.27 and 36,402.32 is: 50,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.66 : 91,931.27 = 36,402.32 : x
  2. Step 2: Convert to fraction form
    66,617.66/91,931.27 = 36,402.32/x
  3. Step 3: Cross multiply
    66,617.66x = 91,931.27 × 36,402.32
  4. Step 4: Simplify right side
    66,617.66x = 3,346,511,556.36
  5. Step 5: Solve for x
    x = 3,346,511,556.36/66,617.66
  6. Step 6: Final answer
    x = 50,234.60

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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.