Home / 81,540.98-122,211.05-38,868.83

Finding the Fourth Proportional to 81,540.98, 122,211.05 and 38,868.83

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Solution

The fourth proportional to 81,540.98, 122,211.05 and 38,868.83 is: 58,255.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,540.98 : 122,211.05 = 38,868.83 : x
  2. Step 2: Convert to fraction form
    81,540.98/122,211.05 = 38,868.83/x
  3. Step 3: Cross multiply
    81,540.98x = 122,211.05 × 38,868.83
  4. Step 4: Simplify right side
    81,540.98x = 4,750,199,915.52
  5. Step 5: Solve for x
    x = 4,750,199,915.52/81,540.98
  6. Step 6: Final answer
    x = 58,255.37

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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.