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Finding the Fourth Proportional to 70,012.46, 104,987.03 and 20,081.09

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Solution

The fourth proportional to 70,012.46, 104,987.03 and 20,081.09 is: 30,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,012.46 : 104,987.03 = 20,081.09 : x
  2. Step 2: Convert to fraction form
    70,012.46/104,987.03 = 20,081.09/x
  3. Step 3: Cross multiply
    70,012.46x = 104,987.03 × 20,081.09
  4. Step 4: Simplify right side
    70,012.46x = 2,108,253,372.92
  5. Step 5: Solve for x
    x = 2,108,253,372.92/70,012.46
  6. Step 6: Final answer
    x = 30,112.55

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1.5x scale

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.