Home / 54,535.13-81,769.20-21,216.37

Finding the Fourth Proportional to 54,535.13, 81,769.20 and 21,216.37

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Solution

The fourth proportional to 54,535.13, 81,769.20 and 21,216.37 is: 31,811.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,535.13 : 81,769.20 = 21,216.37 : x
  2. Step 2: Convert to fraction form
    54,535.13/81,769.20 = 21,216.37/x
  3. Step 3: Cross multiply
    54,535.13x = 81,769.20 × 21,216.37
  4. Step 4: Simplify right side
    54,535.13x = 1,734,845,192.96
  5. Step 5: Solve for x
    x = 1,734,845,192.96/54,535.13
  6. Step 6: Final answer
    x = 31,811.52

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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.