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Finding the Fourth Proportional to 66,309, 91,506.60 and 36,501

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Solution

The fourth proportional to 66,309, 91,506.60 and 36,501 is: 50,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309 : 91,506.60 = 36,501 : x
  2. Step 2: Convert to fraction form
    66,309/91,506.60 = 36,501/x
  3. Step 3: Cross multiply
    66,309x = 91,506.60 × 36,501
  4. Step 4: Simplify right side
    66,309x = 3,340,082,406.60
  5. Step 5: Solve for x
    x = 3,340,082,406.60/66,309
  6. Step 6: Final answer
    x = 50,371.48

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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.