Home / 81,634.54-122,499.06-34,245.40

Finding the Fourth Proportional to 81,634.54, 122,499.06 and 34,245.40

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Solution

The fourth proportional to 81,634.54, 122,499.06 and 34,245.40 is: 51,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,634.54 : 122,499.06 = 34,245.40 : x
  2. Step 2: Convert to fraction form
    81,634.54/122,499.06 = 34,245.40/x
  3. Step 3: Cross multiply
    81,634.54x = 122,499.06 × 34,245.40
  4. Step 4: Simplify right side
    81,634.54x = 4,195,029,309.32
  5. Step 5: Solve for x
    x = 4,195,029,309.32/81,634.54
  6. Step 6: Final answer
    x = 51,387.92

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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.