Home / 54,709.74-82,031.78-21,390.09

Finding the Fourth Proportional to 54,709.74, 82,031.78 and 21,390.09

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Solution

The fourth proportional to 54,709.74, 82,031.78 and 21,390.09 is: 32,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,709.74 : 82,031.78 = 21,390.09 : x
  2. Step 2: Convert to fraction form
    54,709.74/82,031.78 = 21,390.09/x
  3. Step 3: Cross multiply
    54,709.74x = 82,031.78 × 21,390.09
  4. Step 4: Simplify right side
    54,709.74x = 1,754,667,157.06
  5. Step 5: Solve for x
    x = 1,754,667,157.06/54,709.74
  6. Step 6: Final answer
    x = 32,072.30

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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.