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Finding the Fourth Proportional to 39,642.89, 54,735.89 and 25,520.34

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Solution

The fourth proportional to 39,642.89, 54,735.89 and 25,520.34 is: 35,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,642.89 : 54,735.89 = 25,520.34 : x
  2. Step 2: Convert to fraction form
    39,642.89/54,735.89 = 25,520.34/x
  3. Step 3: Cross multiply
    39,642.89x = 54,735.89 × 25,520.34
  4. Step 4: Simplify right side
    39,642.89x = 1,396,878,523.00
  5. Step 5: Solve for x
    x = 1,396,878,523.00/39,642.89
  6. Step 6: Final answer
    x = 35,236.55

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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.