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Finding the Fourth Proportional to 57,892.78, 86,703.09 and 28,217.62

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Solution

The fourth proportional to 57,892.78, 86,703.09 and 28,217.62 is: 42,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,892.78 : 86,703.09 = 28,217.62 : x
  2. Step 2: Convert to fraction form
    57,892.78/86,703.09 = 28,217.62/x
  3. Step 3: Cross multiply
    57,892.78x = 86,703.09 × 28,217.62
  4. Step 4: Simplify right side
    57,892.78x = 2,446,554,846.45
  5. Step 5: Solve for x
    x = 2,446,554,846.45/57,892.78
  6. Step 6: Final answer
    x = 42,260.10

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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.