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Finding the Fourth Proportional to 66,466.63, 91,721.41 and 36,658.63

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Solution

The fourth proportional to 66,466.63, 91,721.41 and 36,658.63 is: 50,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.63 : 91,721.41 = 36,658.63 : x
  2. Step 2: Convert to fraction form
    66,466.63/91,721.41 = 36,658.63/x
  3. Step 3: Cross multiply
    66,466.63x = 91,721.41 × 36,658.63
  4. Step 4: Simplify right side
    66,466.63x = 3,362,381,232.27
  5. Step 5: Solve for x
    x = 3,362,381,232.27/66,466.63
  6. Step 6: Final answer
    x = 50,587.51

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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.