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Finding the Fourth Proportional to 51,321.68, 70,824.20 and 30,101.36

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Solution

The fourth proportional to 51,321.68, 70,824.20 and 30,101.36 is: 41,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,321.68 : 70,824.20 = 30,101.36 : x
  2. Step 2: Convert to fraction form
    51,321.68/70,824.20 = 30,101.36/x
  3. Step 3: Cross multiply
    51,321.68x = 70,824.20 × 30,101.36
  4. Step 4: Simplify right side
    51,321.68x = 2,131,904,740.91
  5. Step 5: Solve for x
    x = 2,131,904,740.91/51,321.68
  6. Step 6: Final answer
    x = 41,540.04

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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.