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Finding the Fourth Proportional to 79,694.18, 109,941.03 and 51,408.98

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Solution

The fourth proportional to 79,694.18, 109,941.03 and 51,408.98 is: 70,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,694.18 : 109,941.03 = 51,408.98 : x
  2. Step 2: Convert to fraction form
    79,694.18/109,941.03 = 51,408.98/x
  3. Step 3: Cross multiply
    79,694.18x = 109,941.03 × 51,408.98
  4. Step 4: Simplify right side
    79,694.18x = 5,651,956,212.45
  5. Step 5: Solve for x
    x = 5,651,956,212.45/79,694.18
  6. Step 6: Final answer
    x = 70,920.56

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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.