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Finding the Fourth Proportional to 70,112.74, 96,764.07 and 39,905.41

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Solution

The fourth proportional to 70,112.74, 96,764.07 and 39,905.41 is: 55,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,112.74 : 96,764.07 = 39,905.41 : x
  2. Step 2: Convert to fraction form
    70,112.74/96,764.07 = 39,905.41/x
  3. Step 3: Cross multiply
    70,112.74x = 96,764.07 × 39,905.41
  4. Step 4: Simplify right side
    70,112.74x = 3,861,409,886.62
  5. Step 5: Solve for x
    x = 3,861,409,886.62/70,112.74
  6. Step 6: Final answer
    x = 55,074.30

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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.