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Finding the Fourth Proportional to 79,609.05, 119,433.08 and 65,401.55

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Solution

The fourth proportional to 79,609.05, 119,433.08 and 65,401.55 is: 98,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,609.05 : 119,433.08 = 65,401.55 : x
  2. Step 2: Convert to fraction form
    79,609.05/119,433.08 = 65,401.55/x
  3. Step 3: Cross multiply
    79,609.05x = 119,433.08 × 65,401.55
  4. Step 4: Simplify right side
    79,609.05x = 7,811,107,629.10
  5. Step 5: Solve for x
    x = 7,811,107,629.10/79,609.05
  6. Step 6: Final answer
    x = 98,118.34

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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.