Home / 54,206.30-81,289.22-18,657.56

Finding the Fourth Proportional to 54,206.30, 81,289.22 and 18,657.56

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Solution

The fourth proportional to 54,206.30, 81,289.22 and 18,657.56 is: 27,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,206.30 : 81,289.22 = 18,657.56 : x
  2. Step 2: Convert to fraction form
    54,206.30/81,289.22 = 18,657.56/x
  3. Step 3: Cross multiply
    54,206.30x = 81,289.22 × 18,657.56
  4. Step 4: Simplify right side
    54,206.30x = 1,516,657,999.77
  5. Step 5: Solve for x
    x = 1,516,657,999.77/54,206.30
  6. Step 6: Final answer
    x = 27,979.37

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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.