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Finding the Fourth Proportional to 79,115.67, 109,179.75 and 43,307.96

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Solution

The fourth proportional to 79,115.67, 109,179.75 and 43,307.96 is: 59,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,115.67 : 109,179.75 = 43,307.96 : x
  2. Step 2: Convert to fraction form
    79,115.67/109,179.75 = 43,307.96/x
  3. Step 3: Cross multiply
    79,115.67x = 109,179.75 × 43,307.96
  4. Step 4: Simplify right side
    79,115.67x = 4,728,351,699.91
  5. Step 5: Solve for x
    x = 4,728,351,699.91/79,115.67
  6. Step 6: Final answer
    x = 59,765.05

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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.