Home / 54,261.96-81,405.34-20,982.28

Finding the Fourth Proportional to 54,261.96, 81,405.34 and 20,982.28

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Solution

The fourth proportional to 54,261.96, 81,405.34 and 20,982.28 is: 31,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,261.96 : 81,405.34 = 20,982.28 : x
  2. Step 2: Convert to fraction form
    54,261.96/81,405.34 = 20,982.28/x
  3. Step 3: Cross multiply
    54,261.96x = 81,405.34 × 20,982.28
  4. Step 4: Simplify right side
    54,261.96x = 1,708,069,637.38
  5. Step 5: Solve for x
    x = 1,708,069,637.38/54,261.96
  6. Step 6: Final answer
    x = 31,478.21

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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.