Home / 78,203.43-117,334.50-36,103.68

Finding the Fourth Proportional to 78,203.43, 117,334.50 and 36,103.68

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Solution

The fourth proportional to 78,203.43, 117,334.50 and 36,103.68 is: 54,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,203.43 : 117,334.50 = 36,103.68 : x
  2. Step 2: Convert to fraction form
    78,203.43/117,334.50 = 36,103.68/x
  3. Step 3: Cross multiply
    78,203.43x = 117,334.50 × 36,103.68
  4. Step 4: Simplify right side
    78,203.43x = 4,236,207,240.96
  5. Step 5: Solve for x
    x = 4,236,207,240.96/78,203.43
  6. Step 6: Final answer
    x = 54,169.07

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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.