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Finding the Fourth Proportional to 79,310.50, 118,965.75 and 30,062.50

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Solution

The fourth proportional to 79,310.50, 118,965.75 and 30,062.50 is: 45,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310.50 : 118,965.75 = 30,062.50 : x
  2. Step 2: Convert to fraction form
    79,310.50/118,965.75 = 30,062.50/x
  3. Step 3: Cross multiply
    79,310.50x = 118,965.75 × 30,062.50
  4. Step 4: Simplify right side
    79,310.50x = 3,576,407,859.38
  5. Step 5: Solve for x
    x = 3,576,407,859.38/79,310.50
  6. Step 6: Final answer
    x = 45,093.75

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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.