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Finding the Fourth Proportional to 76,405.88, 105,427.80 and 44,135.38

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Solution

The fourth proportional to 76,405.88, 105,427.80 and 44,135.38 is: 60,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,405.88 : 105,427.80 = 44,135.38 : x
  2. Step 2: Convert to fraction form
    76,405.88/105,427.80 = 44,135.38/x
  3. Step 3: Cross multiply
    76,405.88x = 105,427.80 × 44,135.38
  4. Step 4: Simplify right side
    76,405.88x = 4,653,096,015.56
  5. Step 5: Solve for x
    x = 4,653,096,015.56/76,405.88
  6. Step 6: Final answer
    x = 60,899.71

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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.