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Finding the Fourth Proportional to 104,693.80, 144,479.82 and 56,949.70

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Solution

The fourth proportional to 104,693.80, 144,479.82 and 56,949.70 is: 78,591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,693.80 : 144,479.82 = 56,949.70 : x
  2. Step 2: Convert to fraction form
    104,693.80/144,479.82 = 56,949.70/x
  3. Step 3: Cross multiply
    104,693.80x = 144,479.82 × 56,949.70
  4. Step 4: Simplify right side
    104,693.80x = 8,228,082,405.05
  5. Step 5: Solve for x
    x = 8,228,082,405.05/104,693.80
  6. Step 6: Final answer
    x = 78,591.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.