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Finding the Fourth Proportional to 80,529, 120,827.62 and 43,079.26

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Solution

The fourth proportional to 80,529, 120,827.62 and 43,079.26 is: 64,637.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,529 : 120,827.62 = 43,079.26 : x
  2. Step 2: Convert to fraction form
    80,529/120,827.62 = 43,079.26/x
  3. Step 3: Cross multiply
    80,529x = 120,827.62 × 43,079.26
  4. Step 4: Simplify right side
    80,529x = 5,205,164,457.16
  5. Step 5: Solve for x
    x = 5,205,164,457.16/80,529
  6. Step 6: Final answer
    x = 64,637.14

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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.