Home / 84,579.78-126,880.61-25,421.43

Finding the Fourth Proportional to 84,579.78, 126,880.61 and 25,421.43

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Solution

The fourth proportional to 84,579.78, 126,880.61 and 25,421.43 is: 38,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,579.78 : 126,880.61 = 25,421.43 : x
  2. Step 2: Convert to fraction form
    84,579.78/126,880.61 = 25,421.43/x
  3. Step 3: Cross multiply
    84,579.78x = 126,880.61 × 25,421.43
  4. Step 4: Simplify right side
    84,579.78x = 3,225,486,418.37
  5. Step 5: Solve for x
    x = 3,225,486,418.37/84,579.78
  6. Step 6: Final answer
    x = 38,135.43

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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.