Home / 281,554.08-422,358.60-81,876

Finding the Fourth Proportional to 281,554.08, 422,358.60 and 81,876

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Solution

The fourth proportional to 281,554.08, 422,358.60 and 81,876 is: 122,821.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,554.08 : 422,358.60 = 81,876 : x
  2. Step 2: Convert to fraction form
    281,554.08/422,358.60 = 81,876/x
  3. Step 3: Cross multiply
    281,554.08x = 422,358.60 × 81,876
  4. Step 4: Simplify right side
    281,554.08x = 34,581,032,733.60
  5. Step 5: Solve for x
    x = 34,581,032,733.60/281,554.08
  6. Step 6: Final answer
    x = 122,821.99

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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.