Home / 54,115.20-74,686.32-30,243.60

Finding the Fourth Proportional to 54,115.20, 74,686.32 and 30,243.60

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Solution

The fourth proportional to 54,115.20, 74,686.32 and 30,243.60 is: 41,740.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,115.20 : 74,686.32 = 30,243.60 : x
  2. Step 2: Convert to fraction form
    54,115.20/74,686.32 = 30,243.60/x
  3. Step 3: Cross multiply
    54,115.20x = 74,686.32 × 30,243.60
  4. Step 4: Simplify right side
    54,115.20x = 2,258,783,187.55
  5. Step 5: Solve for x
    x = 2,258,783,187.55/54,115.20
  6. Step 6: Final answer
    x = 41,740.27

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1.5x scale

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.