Home / 103,638.98-155,540.48-40,489.35

Finding the Fourth Proportional to 103,638.98, 155,540.48 and 40,489.35

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Solution

The fourth proportional to 103,638.98, 155,540.48 and 40,489.35 is: 60,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.98 : 155,540.48 = 40,489.35 : x
  2. Step 2: Convert to fraction form
    103,638.98/155,540.48 = 40,489.35/x
  3. Step 3: Cross multiply
    103,638.98x = 155,540.48 × 40,489.35
  4. Step 4: Simplify right side
    103,638.98x = 6,297,732,731.44
  5. Step 5: Solve for x
    x = 6,297,732,731.44/103,638.98
  6. Step 6: Final answer
    x = 60,766.07

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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.