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Finding the Fourth Proportional to 70,140.66, 105,183.20 and 40,579.25

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Solution

The fourth proportional to 70,140.66, 105,183.20 and 40,579.25 is: 60,852.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,140.66 : 105,183.20 = 40,579.25 : x
  2. Step 2: Convert to fraction form
    70,140.66/105,183.20 = 40,579.25/x
  3. Step 3: Cross multiply
    70,140.66x = 105,183.20 × 40,579.25
  4. Step 4: Simplify right side
    70,140.66x = 4,268,255,546.29
  5. Step 5: Solve for x
    x = 4,268,255,546.29/70,140.66
  6. Step 6: Final answer
    x = 60,852.80

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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.