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Finding the Fourth Proportional to 66,529, 91,810.14 and 36,721

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Solution

The fourth proportional to 66,529, 91,810.14 and 36,721 is: 50,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,529 : 91,810.14 = 36,721 : x
  2. Step 2: Convert to fraction form
    66,529/91,810.14 = 36,721/x
  3. Step 3: Cross multiply
    66,529x = 91,810.14 × 36,721
  4. Step 4: Simplify right side
    66,529x = 3,371,360,150.94
  5. Step 5: Solve for x
    x = 3,371,360,150.94/66,529
  6. Step 6: Final answer
    x = 50,675.05

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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.