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Finding the Fourth Proportional to 79,897.88, 110,725.22 and 78,770.36

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Solution

The fourth proportional to 79,897.88, 110,725.22 and 78,770.36 is: 109,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,897.88 : 110,725.22 = 78,770.36 : x
  2. Step 2: Convert to fraction form
    79,897.88/110,725.22 = 78,770.36/x
  3. Step 3: Cross multiply
    79,897.88x = 110,725.22 × 78,770.36
  4. Step 4: Simplify right side
    79,897.88x = 8,721,865,440.48
  5. Step 5: Solve for x
    x = 8,721,865,440.48/79,897.88
  6. Step 6: Final answer
    x = 109,162.66

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.