Home / 54,206.38-81,289.34-18,657.76

Finding the Fourth Proportional to 54,206.38, 81,289.34 and 18,657.76

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Solution

The fourth proportional to 54,206.38, 81,289.34 and 18,657.76 is: 27,979.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,206.38 : 81,289.34 = 18,657.76 : x
  2. Step 2: Convert to fraction form
    54,206.38/81,289.34 = 18,657.76/x
  3. Step 3: Cross multiply
    54,206.38x = 81,289.34 × 18,657.76
  4. Step 4: Simplify right side
    54,206.38x = 1,516,676,996.28
  5. Step 5: Solve for x
    x = 1,516,676,996.28/54,206.38
  6. Step 6: Final answer
    x = 27,979.68

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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.