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Finding the Fourth Proportional to 57,363.18, 86,031.80 and 21,811.82

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Solution

The fourth proportional to 57,363.18, 86,031.80 and 21,811.82 is: 32,712.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,363.18 : 86,031.80 = 21,811.82 : x
  2. Step 2: Convert to fraction form
    57,363.18/86,031.80 = 21,811.82/x
  3. Step 3: Cross multiply
    57,363.18x = 86,031.80 × 21,811.82
  4. Step 4: Simplify right side
    57,363.18x = 1,876,509,596.66
  5. Step 5: Solve for x
    x = 1,876,509,596.66/57,363.18
  6. Step 6: Final answer
    x = 32,712.79

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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.