Home / 54,271.89-81,419.80-18,247.12

Finding the Fourth Proportional to 54,271.89, 81,419.80 and 18,247.12

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Solution

The fourth proportional to 54,271.89, 81,419.80 and 18,247.12 is: 27,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,271.89 : 81,419.80 = 18,247.12 : x
  2. Step 2: Convert to fraction form
    54,271.89/81,419.80 = 18,247.12/x
  3. Step 3: Cross multiply
    54,271.89x = 81,419.80 × 18,247.12
  4. Step 4: Simplify right side
    54,271.89x = 1,485,676,611.81
  5. Step 5: Solve for x
    x = 1,485,676,611.81/54,271.89
  6. Step 6: Final answer
    x = 27,374.70

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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.