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Finding the Fourth Proportional to 70,654.32, 105,991.80 and 23,920.56

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Solution

The fourth proportional to 70,654.32, 105,991.80 and 23,920.56 is: 35,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,654.32 : 105,991.80 = 23,920.56 : x
  2. Step 2: Convert to fraction form
    70,654.32/105,991.80 = 23,920.56/x
  3. Step 3: Cross multiply
    70,654.32x = 105,991.80 × 23,920.56
  4. Step 4: Simplify right side
    70,654.32x = 2,535,383,211.41
  5. Step 5: Solve for x
    x = 2,535,383,211.41/70,654.32
  6. Step 6: Final answer
    x = 35,884.33

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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.