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Finding the Fourth Proportional to 54,398.55, 81,606.06 and 19,329.87

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Solution

The fourth proportional to 54,398.55, 81,606.06 and 19,329.87 is: 28,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,398.55 : 81,606.06 = 19,329.87 : x
  2. Step 2: Convert to fraction form
    54,398.55/81,606.06 = 19,329.87/x
  3. Step 3: Cross multiply
    54,398.55x = 81,606.06 × 19,329.87
  4. Step 4: Simplify right side
    54,398.55x = 1,577,434,531.01
  5. Step 5: Solve for x
    x = 1,577,434,531.01/54,398.55
  6. Step 6: Final answer
    x = 28,997.73

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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.