Home / 80,419.56-120,629.35-55,094.10

Finding the Fourth Proportional to 80,419.56, 120,629.35 and 55,094.10

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Solution

The fourth proportional to 80,419.56, 120,629.35 and 55,094.10 is: 82,641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,419.56 : 120,629.35 = 55,094.10 : x
  2. Step 2: Convert to fraction form
    80,419.56/120,629.35 = 55,094.10/x
  3. Step 3: Cross multiply
    80,419.56x = 120,629.35 × 55,094.10
  4. Step 4: Simplify right side
    80,419.56x = 6,645,965,471.84
  5. Step 5: Solve for x
    x = 6,645,965,471.84/80,419.56
  6. Step 6: Final answer
    x = 82,641.16

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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.