Home / 81,424.12-122,144.28-25,261.96

Finding the Fourth Proportional to 81,424.12, 122,144.28 and 25,261.96

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Solution

The fourth proportional to 81,424.12, 122,144.28 and 25,261.96 is: 37,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.12 : 122,144.28 = 25,261.96 : x
  2. Step 2: Convert to fraction form
    81,424.12/122,144.28 = 25,261.96/x
  3. Step 3: Cross multiply
    81,424.12x = 122,144.28 × 25,261.96
  4. Step 4: Simplify right side
    81,424.12x = 3,085,603,915.59
  5. Step 5: Solve for x
    x = 3,085,603,915.59/81,424.12
  6. Step 6: Final answer
    x = 37,895.45

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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.