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Finding the Fourth Proportional to 45,201.98, 67,802.43 and 21,811.88

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Solution

The fourth proportional to 45,201.98, 67,802.43 and 21,811.88 is: 32,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,201.98 : 67,802.43 = 21,811.88 : x
  2. Step 2: Convert to fraction form
    45,201.98/67,802.43 = 21,811.88/x
  3. Step 3: Cross multiply
    45,201.98x = 67,802.43 × 21,811.88
  4. Step 4: Simplify right side
    45,201.98x = 1,478,898,466.87
  5. Step 5: Solve for x
    x = 1,478,898,466.87/45,201.98
  6. Step 6: Final answer
    x = 32,717.56

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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.