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Finding the Fourth Proportional to 61,260, 91,873.58 and 16,876.20

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Solution

The fourth proportional to 61,260, 91,873.58 and 16,876.20 is: 25,309.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,260 : 91,873.58 = 16,876.20 : x
  2. Step 2: Convert to fraction form
    61,260/91,873.58 = 16,876.20/x
  3. Step 3: Cross multiply
    61,260x = 91,873.58 × 16,876.20
  4. Step 4: Simplify right side
    61,260x = 1,550,476,910.80
  5. Step 5: Solve for x
    x = 1,550,476,910.80/61,260
  6. Step 6: Final answer
    x = 25,309.78

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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.