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Finding the Fourth Proportional to 49,612, 68,445.06 and 28,379.92

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Solution

The fourth proportional to 49,612, 68,445.06 and 28,379.92 is: 39,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,612 : 68,445.06 = 28,379.92 : x
  2. Step 2: Convert to fraction form
    49,612/68,445.06 = 28,379.92/x
  3. Step 3: Cross multiply
    49,612x = 68,445.06 × 28,379.92
  4. Step 4: Simplify right side
    49,612x = 1,942,465,327.20
  5. Step 5: Solve for x
    x = 1,942,465,327.20/49,612
  6. Step 6: Final answer
    x = 39,153.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.