Home / 54,435.69-81,621.75-21,116.82

Finding the Fourth Proportional to 54,435.69, 81,621.75 and 21,116.82

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Solution

The fourth proportional to 54,435.69, 81,621.75 and 21,116.82 is: 31,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.69 : 81,621.75 = 21,116.82 : x
  2. Step 2: Convert to fraction form
    54,435.69/81,621.75 = 21,116.82/x
  3. Step 3: Cross multiply
    54,435.69x = 81,621.75 × 21,116.82
  4. Step 4: Simplify right side
    54,435.69x = 1,723,591,802.84
  5. Step 5: Solve for x
    x = 1,723,591,802.84/54,435.69
  6. Step 6: Final answer
    x = 31,662.90

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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.