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Finding the Fourth Proportional to 81,751.96, 122,561.80 and 25,563.16

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Solution

The fourth proportional to 81,751.96, 122,561.80 and 25,563.16 is: 38,324.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.96 : 122,561.80 = 25,563.16 : x
  2. Step 2: Convert to fraction form
    81,751.96/122,561.80 = 25,563.16/x
  3. Step 3: Cross multiply
    81,751.96x = 122,561.80 × 25,563.16
  4. Step 4: Simplify right side
    81,751.96x = 3,133,066,903.29
  5. Step 5: Solve for x
    x = 3,133,066,903.29/81,751.96
  6. Step 6: Final answer
    x = 38,324.06

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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.