Home / 82,419.60-123,629.40-55,847.55

Finding the Fourth Proportional to 82,419.60, 123,629.40 and 55,847.55

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Solution

The fourth proportional to 82,419.60, 123,629.40 and 55,847.55 is: 83,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,419.60 : 123,629.40 = 55,847.55 : x
  2. Step 2: Convert to fraction form
    82,419.60/123,629.40 = 55,847.55/x
  3. Step 3: Cross multiply
    82,419.60x = 123,629.40 × 55,847.55
  4. Step 4: Simplify right side
    82,419.60x = 6,904,399,097.97
  5. Step 5: Solve for x
    x = 6,904,399,097.97/82,419.60
  6. Step 6: Final answer
    x = 83,771.33

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1.5x scale

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.