Home / 54,487.21-81,709.48-21,202.87

Finding the Fourth Proportional to 54,487.21, 81,709.48 and 21,202.87

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Solution

The fourth proportional to 54,487.21, 81,709.48 and 21,202.87 is: 31,796.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,487.21 : 81,709.48 = 21,202.87 : x
  2. Step 2: Convert to fraction form
    54,487.21/81,709.48 = 21,202.87/x
  3. Step 3: Cross multiply
    54,487.21x = 81,709.48 × 21,202.87
  4. Step 4: Simplify right side
    54,487.21x = 1,732,475,482.21
  5. Step 5: Solve for x
    x = 1,732,475,482.21/54,487.21
  6. Step 6: Final answer
    x = 31,796.00

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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.