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Finding the Fourth Proportional to 69,645.60, 95,979.60 and 68,608.80

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Solution

The fourth proportional to 69,645.60, 95,979.60 and 68,608.80 is: 94,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,645.60 : 95,979.60 = 68,608.80 : x
  2. Step 2: Convert to fraction form
    69,645.60/95,979.60 = 68,608.80/x
  3. Step 3: Cross multiply
    69,645.60x = 95,979.60 × 68,608.80
  4. Step 4: Simplify right side
    69,645.60x = 6,585,045,180.48
  5. Step 5: Solve for x
    x = 6,585,045,180.48/69,645.60
  6. Step 6: Final answer
    x = 94,550.77

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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.