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Finding the Fourth Proportional to 63,780.80, 95,671.16 and 28,679.44

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Solution

The fourth proportional to 63,780.80, 95,671.16 and 28,679.44 is: 43,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,780.80 : 95,671.16 = 28,679.44 : x
  2. Step 2: Convert to fraction form
    63,780.80/95,671.16 = 28,679.44/x
  3. Step 3: Cross multiply
    63,780.80x = 95,671.16 × 28,679.44
  4. Step 4: Simplify right side
    63,780.80x = 2,743,795,292.95
  5. Step 5: Solve for x
    x = 2,743,795,292.95/63,780.80
  6. Step 6: Final answer
    x = 43,019.14

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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.