Home / 101,861.68-140,568.62-56,540.20

Finding the Fourth Proportional to 101,861.68, 140,568.62 and 56,540.20

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Solution

The fourth proportional to 101,861.68, 140,568.62 and 56,540.20 is: 78,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,861.68 : 140,568.62 = 56,540.20 : x
  2. Step 2: Convert to fraction form
    101,861.68/140,568.62 = 56,540.20/x
  3. Step 3: Cross multiply
    101,861.68x = 140,568.62 × 56,540.20
  4. Step 4: Simplify right side
    101,861.68x = 7,947,777,888.52
  5. Step 5: Solve for x
    x = 7,947,777,888.52/101,861.68
  6. Step 6: Final answer
    x = 78,025.20

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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.