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Finding the Fourth Proportional to 80,446.88, 120,495.28 and 54,034.40

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Solution

The fourth proportional to 80,446.88, 120,495.28 and 54,034.40 is: 80,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,446.88 : 120,495.28 = 54,034.40 : x
  2. Step 2: Convert to fraction form
    80,446.88/120,495.28 = 54,034.40/x
  3. Step 3: Cross multiply
    80,446.88x = 120,495.28 × 54,034.40
  4. Step 4: Simplify right side
    80,446.88x = 6,510,890,157.63
  5. Step 5: Solve for x
    x = 6,510,890,157.63/80,446.88
  6. Step 6: Final answer
    x = 80,934.03

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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.