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Finding the Fourth Proportional to 104,540.85, 144,266.13 and 56,793.78

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Solution

The fourth proportional to 104,540.85, 144,266.13 and 56,793.78 is: 78,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,540.85 : 144,266.13 = 56,793.78 : x
  2. Step 2: Convert to fraction form
    104,540.85/144,266.13 = 56,793.78/x
  3. Step 3: Cross multiply
    104,540.85x = 144,266.13 × 56,793.78
  4. Step 4: Simplify right side
    104,540.85x = 8,193,418,848.67
  5. Step 5: Solve for x
    x = 8,193,418,848.67/104,540.85
  6. Step 6: Final answer
    x = 78,375.28

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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.