Home / 81,654.35-122,433.85-31,676.05

Finding the Fourth Proportional to 81,654.35, 122,433.85 and 31,676.05

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Solution

The fourth proportional to 81,654.35, 122,433.85 and 31,676.05 is: 47,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.35 : 122,433.85 = 31,676.05 : x
  2. Step 2: Convert to fraction form
    81,654.35/122,433.85 = 31,676.05/x
  3. Step 3: Cross multiply
    81,654.35x = 122,433.85 × 31,676.05
  4. Step 4: Simplify right side
    81,654.35x = 3,878,220,142.12
  5. Step 5: Solve for x
    x = 3,878,220,142.12/81,654.35
  6. Step 6: Final answer
    x = 47,495.58

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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.