Home / 54,251.19-81,389.21-20,971.53

Finding the Fourth Proportional to 54,251.19, 81,389.21 and 20,971.53

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Solution

The fourth proportional to 54,251.19, 81,389.21 and 20,971.53 is: 31,462.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,251.19 : 81,389.21 = 20,971.53 : x
  2. Step 2: Convert to fraction form
    54,251.19/81,389.21 = 20,971.53/x
  3. Step 3: Cross multiply
    54,251.19x = 81,389.21 × 20,971.53
  4. Step 4: Simplify right side
    54,251.19x = 1,706,856,154.33
  5. Step 5: Solve for x
    x = 1,706,856,154.33/54,251.19
  6. Step 6: Final answer
    x = 31,462.10

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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.