Home / 81,847.01-122,769.96-21,057.18

Finding the Fourth Proportional to 81,847.01, 122,769.96 and 21,057.18

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Solution

The fourth proportional to 81,847.01, 122,769.96 and 21,057.18 is: 31,585.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,847.01 : 122,769.96 = 21,057.18 : x
  2. Step 2: Convert to fraction form
    81,847.01/122,769.96 = 21,057.18/x
  3. Step 3: Cross multiply
    81,847.01x = 122,769.96 × 21,057.18
  4. Step 4: Simplify right side
    81,847.01x = 2,585,189,146.31
  5. Step 5: Solve for x
    x = 2,585,189,146.31/81,847.01
  6. Step 6: Final answer
    x = 31,585.63

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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.