Home / 68,110.79-93,991.43-39,431.66

Finding the Fourth Proportional to 68,110.79, 93,991.43 and 39,431.66

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Solution

The fourth proportional to 68,110.79, 93,991.43 and 39,431.66 is: 54,414.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,110.79 : 93,991.43 = 39,431.66 : x
  2. Step 2: Convert to fraction form
    68,110.79/93,991.43 = 39,431.66/x
  3. Step 3: Cross multiply
    68,110.79x = 93,991.43 × 39,431.66
  4. Step 4: Simplify right side
    68,110.79x = 3,706,237,443.56
  5. Step 5: Solve for x
    x = 3,706,237,443.56/68,110.79
  6. Step 6: Final answer
    x = 54,414.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.