Home / 81,528.80-122,310.16-25,372.96

Finding the Fourth Proportional to 81,528.80, 122,310.16 and 25,372.96

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Solution

The fourth proportional to 81,528.80, 122,310.16 and 25,372.96 is: 38,064.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.80 : 122,310.16 = 25,372.96 : x
  2. Step 2: Convert to fraction form
    81,528.80/122,310.16 = 25,372.96/x
  3. Step 3: Cross multiply
    81,528.80x = 122,310.16 × 25,372.96
  4. Step 4: Simplify right side
    81,528.80x = 3,103,370,797.27
  5. Step 5: Solve for x
    x = 3,103,370,797.27/81,528.80
  6. Step 6: Final answer
    x = 38,064.72

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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.