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Finding the Fourth Proportional to 79,408.30, 119,087.16 and 26,087.90

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Solution

The fourth proportional to 79,408.30, 119,087.16 and 26,087.90 is: 39,123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,408.30 : 119,087.16 = 26,087.90 : x
  2. Step 2: Convert to fraction form
    79,408.30/119,087.16 = 26,087.90/x
  3. Step 3: Cross multiply
    79,408.30x = 119,087.16 × 26,087.90
  4. Step 4: Simplify right side
    79,408.30x = 3,106,733,921.36
  5. Step 5: Solve for x
    x = 3,106,733,921.36/79,408.30
  6. Step 6: Final answer
    x = 39,123.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.