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Finding the Fourth Proportional to 80,523.66, 120,791.43 and 21,358.02

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Solution

The fourth proportional to 80,523.66, 120,791.43 and 21,358.02 is: 32,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,523.66 : 120,791.43 = 21,358.02 : x
  2. Step 2: Convert to fraction form
    80,523.66/120,791.43 = 21,358.02/x
  3. Step 3: Cross multiply
    80,523.66x = 120,791.43 × 21,358.02
  4. Step 4: Simplify right side
    80,523.66x = 2,579,865,777.77
  5. Step 5: Solve for x
    x = 2,579,865,777.77/80,523.66
  6. Step 6: Final answer
    x = 32,038.61

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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.