Home / 84,431.22-126,480.40-68,654.06

Finding the Fourth Proportional to 84,431.22, 126,480.40 and 68,654.06

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Solution

The fourth proportional to 84,431.22, 126,480.40 and 68,654.06 is: 102,845.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,431.22 : 126,480.40 = 68,654.06 : x
  2. Step 2: Convert to fraction form
    84,431.22/126,480.40 = 68,654.06/x
  3. Step 3: Cross multiply
    84,431.22x = 126,480.40 × 68,654.06
  4. Step 4: Simplify right side
    84,431.22x = 8,683,392,970.42
  5. Step 5: Solve for x
    x = 8,683,392,970.42/84,431.22
  6. Step 6: Final answer
    x = 102,845.76

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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.