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Finding the Fourth Proportional to 78,676.30, 108,573.78 and 46,846.54

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Solution

The fourth proportional to 78,676.30, 108,573.78 and 46,846.54 is: 64,648.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,676.30 : 108,573.78 = 46,846.54 : x
  2. Step 2: Convert to fraction form
    78,676.30/108,573.78 = 46,846.54/x
  3. Step 3: Cross multiply
    78,676.30x = 108,573.78 × 46,846.54
  4. Step 4: Simplify right side
    78,676.30x = 5,086,305,927.72
  5. Step 5: Solve for x
    x = 5,086,305,927.72/78,676.30
  6. Step 6: Final answer
    x = 64,648.51

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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.