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Finding the Fourth Proportional to 84,613.20, 126,919.80 and 34,676.70

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Solution

The fourth proportional to 84,613.20, 126,919.80 and 34,676.70 is: 52,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,613.20 : 126,919.80 = 34,676.70 : x
  2. Step 2: Convert to fraction form
    84,613.20/126,919.80 = 34,676.70/x
  3. Step 3: Cross multiply
    84,613.20x = 126,919.80 × 34,676.70
  4. Step 4: Simplify right side
    84,613.20x = 4,401,159,828.66
  5. Step 5: Solve for x
    x = 4,401,159,828.66/84,613.20
  6. Step 6: Final answer
    x = 52,015.05

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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.