Home / 281,688.29-422,622.75-82,020.66

Finding the Fourth Proportional to 281,688.29, 422,622.75 and 82,020.66

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Solution

The fourth proportional to 281,688.29, 422,622.75 and 82,020.66 is: 123,057.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,688.29 : 422,622.75 = 82,020.66 : x
  2. Step 2: Convert to fraction form
    281,688.29/422,622.75 = 82,020.66/x
  3. Step 3: Cross multiply
    281,688.29x = 422,622.75 × 82,020.66
  4. Step 4: Simplify right side
    281,688.29x = 34,663,796,886.02
  5. Step 5: Solve for x
    x = 34,663,796,886.02/281,688.29
  6. Step 6: Final answer
    x = 123,057.29

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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.