Home / 281,488.96-422,261.10-81,811

Finding the Fourth Proportional to 281,488.96, 422,261.10 and 81,811

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Solution

The fourth proportional to 281,488.96, 422,261.10 and 81,811 is: 122,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,488.96 : 422,261.10 = 81,811 : x
  2. Step 2: Convert to fraction form
    281,488.96/422,261.10 = 81,811/x
  3. Step 3: Cross multiply
    281,488.96x = 422,261.10 × 81,811
  4. Step 4: Simplify right side
    281,488.96x = 34,545,602,852.10
  5. Step 5: Solve for x
    x = 34,545,602,852.10/281,488.96
  6. Step 6: Final answer
    x = 122,724.54

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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.