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Finding the Fourth Proportional to 79,092.88, 109,138.62 and 47,255.56

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Solution

The fourth proportional to 79,092.88, 109,138.62 and 47,255.56 is: 65,206.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,092.88 : 109,138.62 = 47,255.56 : x
  2. Step 2: Convert to fraction form
    79,092.88/109,138.62 = 47,255.56/x
  3. Step 3: Cross multiply
    79,092.88x = 109,138.62 × 47,255.56
  4. Step 4: Simplify right side
    79,092.88x = 5,157,406,605.73
  5. Step 5: Solve for x
    x = 5,157,406,605.73/79,092.88
  6. Step 6: Final answer
    x = 65,206.96

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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.