Home / 81,443.23-122,206.65-38,796.96

Finding the Fourth Proportional to 81,443.23, 122,206.65 and 38,796.96

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Solution

The fourth proportional to 81,443.23, 122,206.65 and 38,796.96 is: 58,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,443.23 : 122,206.65 = 38,796.96 : x
  2. Step 2: Convert to fraction form
    81,443.23/122,206.65 = 38,796.96/x
  3. Step 3: Cross multiply
    81,443.23x = 122,206.65 × 38,796.96
  4. Step 4: Simplify right side
    81,443.23x = 4,741,245,706.77
  5. Step 5: Solve for x
    x = 4,741,245,706.77/81,443.23
  6. Step 6: Final answer
    x = 58,215.34

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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.