Home / 83,910.08-115,736.96-55,220.60

Finding the Fourth Proportional to 83,910.08, 115,736.96 and 55,220.60

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Solution

The fourth proportional to 83,910.08, 115,736.96 and 55,220.60 is: 76,165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,910.08 : 115,736.96 = 55,220.60 : x
  2. Step 2: Convert to fraction form
    83,910.08/115,736.96 = 55,220.60/x
  3. Step 3: Cross multiply
    83,910.08x = 115,736.96 × 55,220.60
  4. Step 4: Simplify right side
    83,910.08x = 6,391,063,518.59
  5. Step 5: Solve for x
    x = 6,391,063,518.59/83,910.08
  6. Step 6: Final answer
    x = 76,165.63

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1.5x scale

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.