Home / 39,945.90-55,358.34-39,382.14

Finding the Fourth Proportional to 39,945.90, 55,358.34 and 39,382.14

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Solution

The fourth proportional to 39,945.90, 55,358.34 and 39,382.14 is: 54,577.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,945.90 : 55,358.34 = 39,382.14 : x
  2. Step 2: Convert to fraction form
    39,945.90/55,358.34 = 39,382.14/x
  3. Step 3: Cross multiply
    39,945.90x = 55,358.34 × 39,382.14
  4. Step 4: Simplify right side
    39,945.90x = 2,180,129,896.05
  5. Step 5: Solve for x
    x = 2,180,129,896.05/39,945.90
  6. Step 6: Final answer
    x = 54,577.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.