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Finding the Fourth Proportional to 81,804.16, 122,024.87 and 80,449.44

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Solution

The fourth proportional to 81,804.16, 122,024.87 and 80,449.44 is: 120,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,804.16 : 122,024.87 = 80,449.44 : x
  2. Step 2: Convert to fraction form
    81,804.16/122,024.87 = 80,449.44/x
  3. Step 3: Cross multiply
    81,804.16x = 122,024.87 × 80,449.44
  4. Step 4: Simplify right side
    81,804.16x = 9,816,832,457.57
  5. Step 5: Solve for x
    x = 9,816,832,457.57/81,804.16
  6. Step 6: Final answer
    x = 120,004.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.