Home / 84,431.66-126,481.04-68,654.50

Finding the Fourth Proportional to 84,431.66, 126,481.04 and 68,654.50

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Solution

The fourth proportional to 84,431.66, 126,481.04 and 68,654.50 is: 102,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,431.66 : 126,481.04 = 68,654.50 : x
  2. Step 2: Convert to fraction form
    84,431.66/126,481.04 = 68,654.50/x
  3. Step 3: Cross multiply
    84,431.66x = 126,481.04 × 68,654.50
  4. Step 4: Simplify right side
    84,431.66x = 8,683,492,560.68
  5. Step 5: Solve for x
    x = 8,683,492,560.68/84,431.66
  6. Step 6: Final answer
    x = 102,846.40

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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.