Home / 57,839.60-86,629.80-30,105.20

Finding the Fourth Proportional to 57,839.60, 86,629.80 and 30,105.20

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Solution

The fourth proportional to 57,839.60, 86,629.80 and 30,105.20 is: 45,090.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,839.60 : 86,629.80 = 30,105.20 : x
  2. Step 2: Convert to fraction form
    57,839.60/86,629.80 = 30,105.20/x
  3. Step 3: Cross multiply
    57,839.60x = 86,629.80 × 30,105.20
  4. Step 4: Simplify right side
    57,839.60x = 2,608,007,454.96
  5. Step 5: Solve for x
    x = 2,608,007,454.96/57,839.60
  6. Step 6: Final answer
    x = 45,090.34

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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.