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Finding the Fourth Proportional to 80,595.84, 120,893.48 and 21,431.44

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Solution

The fourth proportional to 80,595.84, 120,893.48 and 21,431.44 is: 32,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,595.84 : 120,893.48 = 21,431.44 : x
  2. Step 2: Convert to fraction form
    80,595.84/120,893.48 = 21,431.44/x
  3. Step 3: Cross multiply
    80,595.84x = 120,893.48 × 21,431.44
  4. Step 4: Simplify right side
    80,595.84x = 2,590,921,363.01
  5. Step 5: Solve for x
    x = 2,590,921,363.01/80,595.84
  6. Step 6: Final answer
    x = 32,147.09

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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.