Home / 54,201.45-81,316.35-20,922.60

Finding the Fourth Proportional to 54,201.45, 81,316.35 and 20,922.60

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Solution

The fourth proportional to 54,201.45, 81,316.35 and 20,922.60 is: 31,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,201.45 : 81,316.35 = 20,922.60 : x
  2. Step 2: Convert to fraction form
    54,201.45/81,316.35 = 20,922.60/x
  3. Step 3: Cross multiply
    54,201.45x = 81,316.35 × 20,922.60
  4. Step 4: Simplify right side
    54,201.45x = 1,701,349,464.51
  5. Step 5: Solve for x
    x = 1,701,349,464.51/54,201.45
  6. Step 6: Final answer
    x = 31,389.37

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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.