Home / 54,186.06-81,216.72-20,889.48

Finding the Fourth Proportional to 54,186.06, 81,216.72 and 20,889.48

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Solution

The fourth proportional to 54,186.06, 81,216.72 and 20,889.48 is: 31,310.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,186.06 : 81,216.72 = 20,889.48 : x
  2. Step 2: Convert to fraction form
    54,186.06/81,216.72 = 20,889.48/x
  3. Step 3: Cross multiply
    54,186.06x = 81,216.72 × 20,889.48
  4. Step 4: Simplify right side
    54,186.06x = 1,696,575,048.11
  5. Step 5: Solve for x
    x = 1,696,575,048.11/54,186.06
  6. Step 6: Final answer
    x = 31,310.18

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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.