Home / 81,537.21-122,290.36-25,378.02

Finding the Fourth Proportional to 81,537.21, 122,290.36 and 25,378.02

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Solution

The fourth proportional to 81,537.21, 122,290.36 and 25,378.02 is: 38,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,537.21 : 122,290.36 = 25,378.02 : x
  2. Step 2: Convert to fraction form
    81,537.21/122,290.36 = 25,378.02/x
  3. Step 3: Cross multiply
    81,537.21x = 122,290.36 × 25,378.02
  4. Step 4: Simplify right side
    81,537.21x = 3,103,487,138.44
  5. Step 5: Solve for x
    x = 3,103,487,138.44/81,537.21
  6. Step 6: Final answer
    x = 38,062.22

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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.