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Finding the Fourth Proportional to 86,227.34, 118,985.76 and 79,879.77

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Solution

The fourth proportional to 86,227.34, 118,985.76 and 79,879.77 is: 110,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,227.34 : 118,985.76 = 79,879.77 : x
  2. Step 2: Convert to fraction form
    86,227.34/118,985.76 = 79,879.77/x
  3. Step 3: Cross multiply
    86,227.34x = 118,985.76 × 79,879.77
  4. Step 4: Simplify right side
    86,227.34x = 9,504,555,142.08
  5. Step 5: Solve for x
    x = 9,504,555,142.08/86,227.34
  6. Step 6: Final answer
    x = 110,226.71

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1.5x scale

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.