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Finding the Fourth Proportional to 54,707.74, 82,028.78 and 21,388.09

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Solution

The fourth proportional to 54,707.74, 82,028.78 and 21,388.09 is: 32,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,707.74 : 82,028.78 = 21,388.09 : x
  2. Step 2: Convert to fraction form
    54,707.74/82,028.78 = 21,388.09/x
  3. Step 3: Cross multiply
    54,707.74x = 82,028.78 × 21,388.09
  4. Step 4: Simplify right side
    54,707.74x = 1,754,438,929.23
  5. Step 5: Solve for x
    x = 1,754,438,929.23/54,707.74
  6. Step 6: Final answer
    x = 32,069.30

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1.5x scale

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.