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Finding the Fourth Proportional to 101,561.60, 140,155.08 and 55,621.02

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Solution

The fourth proportional to 101,561.60, 140,155.08 and 55,621.02 is: 76,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,561.60 : 140,155.08 = 55,621.02 : x
  2. Step 2: Convert to fraction form
    101,561.60/140,155.08 = 55,621.02/x
  3. Step 3: Cross multiply
    101,561.60x = 140,155.08 × 55,621.02
  4. Step 4: Simplify right side
    101,561.60x = 7,795,568,507.78
  5. Step 5: Solve for x
    x = 7,795,568,507.78/101,561.60
  6. Step 6: Final answer
    x = 76,757.05

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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.