Home / 81,654.85-122,434.60-31,676.55

Finding the Fourth Proportional to 81,654.85, 122,434.60 and 31,676.55

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Solution

The fourth proportional to 81,654.85, 122,434.60 and 31,676.55 is: 47,496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.85 : 122,434.60 = 31,676.55 : x
  2. Step 2: Convert to fraction form
    81,654.85/122,434.60 = 31,676.55/x
  3. Step 3: Cross multiply
    81,654.85x = 122,434.60 × 31,676.55
  4. Step 4: Simplify right side
    81,654.85x = 3,878,305,728.63
  5. Step 5: Solve for x
    x = 3,878,305,728.63/81,654.85
  6. Step 6: Final answer
    x = 47,496.33

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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.