Home / 57,693.20-86,564.10-31,416.80

Finding the Fourth Proportional to 57,693.20, 86,564.10 and 31,416.80

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Solution

The fourth proportional to 57,693.20, 86,564.10 and 31,416.80 is: 47,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,693.20 : 86,564.10 = 31,416.80 : x
  2. Step 2: Convert to fraction form
    57,693.20/86,564.10 = 31,416.80/x
  3. Step 3: Cross multiply
    57,693.20x = 86,564.10 × 31,416.80
  4. Step 4: Simplify right side
    57,693.20x = 2,719,567,016.88
  5. Step 5: Solve for x
    x = 2,719,567,016.88/57,693.20
  6. Step 6: Final answer
    x = 47,138.43

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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.