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Finding the Fourth Proportional to 76,670.90, 115,049.55 and 29,917.70

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Solution

The fourth proportional to 76,670.90, 115,049.55 and 29,917.70 is: 44,893.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,670.90 : 115,049.55 = 29,917.70 : x
  2. Step 2: Convert to fraction form
    76,670.90/115,049.55 = 29,917.70/x
  3. Step 3: Cross multiply
    76,670.90x = 115,049.55 × 29,917.70
  4. Step 4: Simplify right side
    76,670.90x = 3,442,017,922.04
  5. Step 5: Solve for x
    x = 3,442,017,922.04/76,670.90
  6. Step 6: Final answer
    x = 44,893.41

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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.