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Finding the Fourth Proportional to 56,250.70, 84,388.20 and 16,811.80

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Solution

The fourth proportional to 56,250.70, 84,388.20 and 16,811.80 is: 25,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,250.70 : 84,388.20 = 16,811.80 : x
  2. Step 2: Convert to fraction form
    56,250.70/84,388.20 = 16,811.80/x
  3. Step 3: Cross multiply
    56,250.70x = 84,388.20 × 16,811.80
  4. Step 4: Simplify right side
    56,250.70x = 1,418,717,540.76
  5. Step 5: Solve for x
    x = 1,418,717,540.76/56,250.70
  6. Step 6: Final answer
    x = 25,221.33

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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.