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Finding the Fourth Proportional to 79,238, 109,348.44 and 47,408.24

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Solution

The fourth proportional to 79,238, 109,348.44 and 47,408.24 is: 65,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,238 : 109,348.44 = 47,408.24 : x
  2. Step 2: Convert to fraction form
    79,238/109,348.44 = 47,408.24/x
  3. Step 3: Cross multiply
    79,238x = 109,348.44 × 47,408.24
  4. Step 4: Simplify right side
    79,238x = 5,184,017,087.15
  5. Step 5: Solve for x
    x = 5,184,017,087.15/79,238
  6. Step 6: Final answer
    x = 65,423.37

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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.