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Finding the Fourth Proportional to 57,910.78, 86,880.78 and 16,357.78

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Solution

The fourth proportional to 57,910.78, 86,880.78 and 16,357.78 is: 24,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,910.78 : 86,880.78 = 16,357.78 : x
  2. Step 2: Convert to fraction form
    57,910.78/86,880.78 = 16,357.78/x
  3. Step 3: Cross multiply
    57,910.78x = 86,880.78 × 16,357.78
  4. Step 4: Simplify right side
    57,910.78x = 1,421,176,685.47
  5. Step 5: Solve for x
    x = 1,421,176,685.47/57,910.78
  6. Step 6: Final answer
    x = 24,540.80

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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.