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Finding the Fourth Proportional to 76,600.84, 114,863.82 and 45,427.72

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Solution

The fourth proportional to 76,600.84, 114,863.82 and 45,427.72 is: 68,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.84 : 114,863.82 = 45,427.72 : x
  2. Step 2: Convert to fraction form
    76,600.84/114,863.82 = 45,427.72/x
  3. Step 3: Cross multiply
    76,600.84x = 114,863.82 × 45,427.72
  4. Step 4: Simplify right side
    76,600.84x = 5,218,001,453.09
  5. Step 5: Solve for x
    x = 5,218,001,453.09/76,600.84
  6. Step 6: Final answer
    x = 68,119.38

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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.