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Finding the Fourth Proportional to 54,398.56, 81,606.06 and 19,329.88

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Solution

The fourth proportional to 54,398.56, 81,606.06 and 19,329.88 is: 28,997.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,398.56 : 81,606.06 = 19,329.88 : x
  2. Step 2: Convert to fraction form
    54,398.56/81,606.06 = 19,329.88/x
  3. Step 3: Cross multiply
    54,398.56x = 81,606.06 × 19,329.88
  4. Step 4: Simplify right side
    54,398.56x = 1,577,435,347.07
  5. Step 5: Solve for x
    x = 1,577,435,347.07/54,398.56
  6. Step 6: Final answer
    x = 28,997.74

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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.