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Finding the Fourth Proportional to 34,799.20, 48,001 and 20,642

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Solution

The fourth proportional to 34,799.20, 48,001 and 20,642 is: 28,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,799.20 : 48,001 = 20,642 : x
  2. Step 2: Convert to fraction form
    34,799.20/48,001 = 20,642/x
  3. Step 3: Cross multiply
    34,799.20x = 48,001 × 20,642
  4. Step 4: Simplify right side
    34,799.20x = 990,836,642
  5. Step 5: Solve for x
    x = 990,836,642/34,799.20
  6. Step 6: Final answer
    x = 28,472.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.