Home / 54,255.90-74,866.39-30,378.72

Finding the Fourth Proportional to 54,255.90, 74,866.39 and 30,378.72

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Solution

The fourth proportional to 54,255.90, 74,866.39 and 30,378.72 is: 41,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,255.90 : 74,866.39 = 30,378.72 : x
  2. Step 2: Convert to fraction form
    54,255.90/74,866.39 = 30,378.72/x
  3. Step 3: Cross multiply
    54,255.90x = 74,866.39 × 30,378.72
  4. Step 4: Simplify right side
    54,255.90x = 2,274,345,099.22
  5. Step 5: Solve for x
    x = 2,274,345,099.22/54,255.90
  6. Step 6: Final answer
    x = 41,918.85

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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.