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Finding the Fourth Proportional to 80,588.96, 120,883.29 and 21,424.62

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Solution

The fourth proportional to 80,588.96, 120,883.29 and 21,424.62 is: 32,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,588.96 : 120,883.29 = 21,424.62 : x
  2. Step 2: Convert to fraction form
    80,588.96/120,883.29 = 21,424.62/x
  3. Step 3: Cross multiply
    80,588.96x = 120,883.29 × 21,424.62
  4. Step 4: Simplify right side
    80,588.96x = 2,589,878,552.60
  5. Step 5: Solve for x
    x = 2,589,878,552.60/80,588.96
  6. Step 6: Final answer
    x = 32,136.89

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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.