Home / 81,416.41-122,128.66-25,294.75

Finding the Fourth Proportional to 81,416.41, 122,128.66 and 25,294.75

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Solution

The fourth proportional to 81,416.41, 122,128.66 and 25,294.75 is: 37,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.41 : 122,128.66 = 25,294.75 : x
  2. Step 2: Convert to fraction form
    81,416.41/122,128.66 = 25,294.75/x
  3. Step 3: Cross multiply
    81,416.41x = 122,128.66 × 25,294.75
  4. Step 4: Simplify right side
    81,416.41x = 3,089,213,648.83
  5. Step 5: Solve for x
    x = 3,089,213,648.83/81,416.41
  6. Step 6: Final answer
    x = 37,943.38

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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.