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Finding the Fourth Proportional to 61,879.60, 85,393.80 and 35,021.62

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Solution

The fourth proportional to 61,879.60, 85,393.80 and 35,021.62 is: 48,329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,879.60 : 85,393.80 = 35,021.62 : x
  2. Step 2: Convert to fraction form
    61,879.60/85,393.80 = 35,021.62/x
  3. Step 3: Cross multiply
    61,879.60x = 85,393.80 × 35,021.62
  4. Step 4: Simplify right side
    61,879.60x = 2,990,629,213.96
  5. Step 5: Solve for x
    x = 2,990,629,213.96/61,879.60
  6. Step 6: Final answer
    x = 48,329.81

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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.