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Finding the Fourth Proportional to 80,663.91, 120,861.31 and 56,932.56

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Solution

The fourth proportional to 80,663.91, 120,861.31 and 56,932.56 is: 85,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,663.91 : 120,861.31 = 56,932.56 : x
  2. Step 2: Convert to fraction form
    80,663.91/120,861.31 = 56,932.56/x
  3. Step 3: Cross multiply
    80,663.91x = 120,861.31 × 56,932.56
  4. Step 4: Simplify right side
    80,663.91x = 6,880,944,302.50
  5. Step 5: Solve for x
    x = 6,880,944,302.50/80,663.91
  6. Step 6: Final answer
    x = 85,303.88

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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.