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Finding the Fourth Proportional to 30,815.79, 46,249.61 and 28,871.79

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Solution

The fourth proportional to 30,815.79, 46,249.61 and 28,871.79 is: 43,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.79 : 46,249.61 = 28,871.79 : x
  2. Step 2: Convert to fraction form
    30,815.79/46,249.61 = 28,871.79/x
  3. Step 3: Cross multiply
    30,815.79x = 46,249.61 × 28,871.79
  4. Step 4: Simplify right side
    30,815.79x = 1,335,309,027.50
  5. Step 5: Solve for x
    x = 1,335,309,027.50/30,815.79
  6. Step 6: Final answer
    x = 43,331.97

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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.