Home / 81,496.10-122,379.96-55,012.88

Finding the Fourth Proportional to 81,496.10, 122,379.96 and 55,012.88

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Solution

The fourth proportional to 81,496.10, 122,379.96 and 55,012.88 is: 82,611.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,496.10 : 122,379.96 = 55,012.88 : x
  2. Step 2: Convert to fraction form
    81,496.10/122,379.96 = 55,012.88/x
  3. Step 3: Cross multiply
    81,496.10x = 122,379.96 × 55,012.88
  4. Step 4: Simplify right side
    81,496.10x = 6,732,474,053.88
  5. Step 5: Solve for x
    x = 6,732,474,053.88/81,496.10
  6. Step 6: Final answer
    x = 82,611.00

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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.