Home / 79,218.72-109,319.22-43,408.35

Finding the Fourth Proportional to 79,218.72, 109,319.22 and 43,408.35

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Solution

The fourth proportional to 79,218.72, 109,319.22 and 43,408.35 is: 59,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218.72 : 109,319.22 = 43,408.35 : x
  2. Step 2: Convert to fraction form
    79,218.72/109,319.22 = 43,408.35/x
  3. Step 3: Cross multiply
    79,218.72x = 109,319.22 × 43,408.35
  4. Step 4: Simplify right side
    79,218.72x = 4,745,366,963.49
  5. Step 5: Solve for x
    x = 4,745,366,963.49/79,218.72
  6. Step 6: Final answer
    x = 59,902.09

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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.