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Finding the Fourth Proportional to 80,638.70, 120,958.38 and 24,479.33

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Solution

The fourth proportional to 80,638.70, 120,958.38 and 24,479.33 is: 36,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,638.70 : 120,958.38 = 24,479.33 : x
  2. Step 2: Convert to fraction form
    80,638.70/120,958.38 = 24,479.33/x
  3. Step 3: Cross multiply
    80,638.70x = 120,958.38 × 24,479.33
  4. Step 4: Simplify right side
    80,638.70x = 2,960,979,495.49
  5. Step 5: Solve for x
    x = 2,960,979,495.49/80,638.70
  6. Step 6: Final answer
    x = 36,719.09

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1.5x scale

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.