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Finding the Fourth Proportional to 66,394.42, 91,621.97 and 36,179.13

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Solution

The fourth proportional to 66,394.42, 91,621.97 and 36,179.13 is: 49,925.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.42 : 91,621.97 = 36,179.13 : x
  2. Step 2: Convert to fraction form
    66,394.42/91,621.97 = 36,179.13/x
  3. Step 3: Cross multiply
    66,394.42x = 91,621.97 × 36,179.13
  4. Step 4: Simplify right side
    66,394.42x = 3,314,803,356.79
  5. Step 5: Solve for x
    x = 3,314,803,356.79/66,394.42
  6. Step 6: Final answer
    x = 49,925.94

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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.