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Finding the Fourth Proportional to 79,675.68, 110,043.42 and 54,139.38

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Solution

The fourth proportional to 79,675.68, 110,043.42 and 54,139.38 is: 74,774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,675.68 : 110,043.42 = 54,139.38 : x
  2. Step 2: Convert to fraction form
    79,675.68/110,043.42 = 54,139.38/x
  3. Step 3: Cross multiply
    79,675.68x = 110,043.42 × 54,139.38
  4. Step 4: Simplify right side
    79,675.68x = 5,957,682,531.88
  5. Step 5: Solve for x
    x = 5,957,682,531.88/79,675.68
  6. Step 6: Final answer
    x = 74,774.17

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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.