Home / 52,072.71-78,109.05-12,629.82

Finding the Fourth Proportional to 52,072.71, 78,109.05 and 12,629.82

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Solution

The fourth proportional to 52,072.71, 78,109.05 and 12,629.82 is: 18,944.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,072.71 : 78,109.05 = 12,629.82 : x
  2. Step 2: Convert to fraction form
    52,072.71/78,109.05 = 12,629.82/x
  3. Step 3: Cross multiply
    52,072.71x = 78,109.05 × 12,629.82
  4. Step 4: Simplify right side
    52,072.71x = 986,503,241.87
  5. Step 5: Solve for x
    x = 986,503,241.87/52,072.71
  6. Step 6: Final answer
    x = 18,944.73

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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.