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Finding the Fourth Proportional to 79,361.27, 118,996.80 and 61,343.12

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Solution

The fourth proportional to 79,361.27, 118,996.80 and 61,343.12 is: 91,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,361.27 : 118,996.80 = 61,343.12 : x
  2. Step 2: Convert to fraction form
    79,361.27/118,996.80 = 61,343.12/x
  3. Step 3: Cross multiply
    79,361.27x = 118,996.80 × 61,343.12
  4. Step 4: Simplify right side
    79,361.27x = 7,299,635,049.47
  5. Step 5: Solve for x
    x = 7,299,635,049.47/79,361.27
  6. Step 6: Final answer
    x = 91,979.82

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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.