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Finding the Fourth Proportional to 81,453.56, 122,153.00 and 36,446.72

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Solution

The fourth proportional to 81,453.56, 122,153.00 and 36,446.72 is: 54,657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.56 : 122,153.00 = 36,446.72 : x
  2. Step 2: Convert to fraction form
    81,453.56/122,153.00 = 36,446.72/x
  3. Step 3: Cross multiply
    81,453.56x = 122,153.00 × 36,446.72
  4. Step 4: Simplify right side
    81,453.56x = 4,452,075,395.16
  5. Step 5: Solve for x
    x = 4,452,075,395.16/81,453.56
  6. Step 6: Final answer
    x = 54,657.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.