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Finding the Fourth Proportional to 76,699.70, 105,874.47 and 44,878.85

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Solution

The fourth proportional to 76,699.70, 105,874.47 and 44,878.85 is: 61,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,699.70 : 105,874.47 = 44,878.85 : x
  2. Step 2: Convert to fraction form
    76,699.70/105,874.47 = 44,878.85/x
  3. Step 3: Cross multiply
    76,699.70x = 105,874.47 × 44,878.85
  4. Step 4: Simplify right side
    76,699.70x = 4,751,523,928.59
  5. Step 5: Solve for x
    x = 4,751,523,928.59/76,699.70
  6. Step 6: Final answer
    x = 61,949.71

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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.