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Finding the Fourth Proportional to 54,019.82, 81,037.82 and 18,953.30

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Solution

The fourth proportional to 54,019.82, 81,037.82 and 18,953.30 is: 28,432.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,019.82 : 81,037.82 = 18,953.30 : x
  2. Step 2: Convert to fraction form
    54,019.82/81,037.82 = 18,953.30/x
  3. Step 3: Cross multiply
    54,019.82x = 81,037.82 × 18,953.30
  4. Step 4: Simplify right side
    54,019.82x = 1,535,934,113.81
  5. Step 5: Solve for x
    x = 1,535,934,113.81/54,019.82
  6. Step 6: Final answer
    x = 28,432.79

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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.