Home / 54,478.89-81,723.65-21,201.66

Finding the Fourth Proportional to 54,478.89, 81,723.65 and 21,201.66

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Solution

The fourth proportional to 54,478.89, 81,723.65 and 21,201.66 is: 31,804.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,478.89 : 81,723.65 = 21,201.66 : x
  2. Step 2: Convert to fraction form
    54,478.89/81,723.65 = 21,201.66/x
  3. Step 3: Cross multiply
    54,478.89x = 81,723.65 × 21,201.66
  4. Step 4: Simplify right side
    54,478.89x = 1,732,676,935.25
  5. Step 5: Solve for x
    x = 1,732,676,935.25/54,478.89
  6. Step 6: Final answer
    x = 31,804.56

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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.