Home / 54,486.21-81,707.99-21,201.87

Finding the Fourth Proportional to 54,486.21, 81,707.99 and 21,201.87

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Solution

The fourth proportional to 54,486.21, 81,707.99 and 21,201.87 is: 31,794.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.21 : 81,707.99 = 21,201.87 : x
  2. Step 2: Convert to fraction form
    54,486.21/81,707.99 = 21,201.87/x
  3. Step 3: Cross multiply
    54,486.21x = 81,707.99 × 21,201.87
  4. Step 4: Simplify right side
    54,486.21x = 1,732,362,075.93
  5. Step 5: Solve for x
    x = 1,732,362,075.93/54,486.21
  6. Step 6: Final answer
    x = 31,794.50

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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.