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Finding the Fourth Proportional to 81,914.18, 122,871.18 and 25,759.22

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Solution

The fourth proportional to 81,914.18, 122,871.18 and 25,759.22 is: 38,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,914.18 : 122,871.18 = 25,759.22 : x
  2. Step 2: Convert to fraction form
    81,914.18/122,871.18 = 25,759.22/x
  3. Step 3: Cross multiply
    81,914.18x = 122,871.18 × 25,759.22
  4. Step 4: Simplify right side
    81,914.18x = 3,165,065,757.28
  5. Step 5: Solve for x
    x = 3,165,065,757.28/81,914.18
  6. Step 6: Final answer
    x = 38,638.80

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1.5x scale

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.