Home / 75,021.90-103,481.44-48,121.80

Finding the Fourth Proportional to 75,021.90, 103,481.44 and 48,121.80

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Solution

The fourth proportional to 75,021.90, 103,481.44 and 48,121.80 is: 66,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,021.90 : 103,481.44 = 48,121.80 : x
  2. Step 2: Convert to fraction form
    75,021.90/103,481.44 = 48,121.80/x
  3. Step 3: Cross multiply
    75,021.90x = 103,481.44 × 48,121.80
  4. Step 4: Simplify right side
    75,021.90x = 4,979,713,159.39
  5. Step 5: Solve for x
    x = 4,979,713,159.39/75,021.90
  6. Step 6: Final answer
    x = 66,376.79

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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.