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Finding the Fourth Proportional to 79,855, 110,243.10 and 48,031

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Solution

The fourth proportional to 79,855, 110,243.10 and 48,031 is: 66,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,855 : 110,243.10 = 48,031 : x
  2. Step 2: Convert to fraction form
    79,855/110,243.10 = 48,031/x
  3. Step 3: Cross multiply
    79,855x = 110,243.10 × 48,031
  4. Step 4: Simplify right side
    79,855x = 5,295,086,336.10
  5. Step 5: Solve for x
    x = 5,295,086,336.10/79,855
  6. Step 6: Final answer
    x = 66,308.76

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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.