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Finding the Fourth Proportional to 39,425, 54,408.72 and 22,659.08

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Solution

The fourth proportional to 39,425, 54,408.72 and 22,659.08 is: 31,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425 : 54,408.72 = 22,659.08 : x
  2. Step 2: Convert to fraction form
    39,425/54,408.72 = 22,659.08/x
  3. Step 3: Cross multiply
    39,425x = 54,408.72 × 22,659.08
  4. Step 4: Simplify right side
    39,425x = 1,232,851,539.18
  5. Step 5: Solve for x
    x = 1,232,851,539.18/39,425
  6. Step 6: Final answer
    x = 31,270.81

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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.