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Finding the Fourth Proportional to 51,195.80, 76,908.90 and 49,813.40

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Solution

The fourth proportional to 51,195.80, 76,908.90 and 49,813.40 is: 74,832.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,195.80 : 76,908.90 = 49,813.40 : x
  2. Step 2: Convert to fraction form
    51,195.80/76,908.90 = 49,813.40/x
  3. Step 3: Cross multiply
    51,195.80x = 76,908.90 × 49,813.40
  4. Step 4: Simplify right side
    51,195.80x = 3,831,093,799.26
  5. Step 5: Solve for x
    x = 3,831,093,799.26/51,195.80
  6. Step 6: Final answer
    x = 74,832.19

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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.