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Finding the Fourth Proportional to 54,477.80, 81,716.70 and 43,324.10

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Solution

The fourth proportional to 54,477.80, 81,716.70 and 43,324.10 is: 64,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,477.80 : 81,716.70 = 43,324.10 : x
  2. Step 2: Convert to fraction form
    54,477.80/81,716.70 = 43,324.10/x
  3. Step 3: Cross multiply
    54,477.80x = 81,716.70 × 43,324.10
  4. Step 4: Simplify right side
    54,477.80x = 3,540,302,482.47
  5. Step 5: Solve for x
    x = 3,540,302,482.47/54,477.80
  6. Step 6: Final answer
    x = 64,986.15

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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.