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Finding the Fourth Proportional to 39,155, 54,078.75 and 25,786.01

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Solution

The fourth proportional to 39,155, 54,078.75 and 25,786.01 is: 35,614.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,155 : 54,078.75 = 25,786.01 : x
  2. Step 2: Convert to fraction form
    39,155/54,078.75 = 25,786.01/x
  3. Step 3: Cross multiply
    39,155x = 54,078.75 × 25,786.01
  4. Step 4: Simplify right side
    39,155x = 1,394,475,188.29
  5. Step 5: Solve for x
    x = 1,394,475,188.29/39,155
  6. Step 6: Final answer
    x = 35,614.23

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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.