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Finding the Fourth Proportional to 79,119.46, 109,185.48 and 43,309.78

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Solution

The fourth proportional to 79,119.46, 109,185.48 and 43,309.78 is: 59,767.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119.46 : 109,185.48 = 43,309.78 : x
  2. Step 2: Convert to fraction form
    79,119.46/109,185.48 = 43,309.78/x
  3. Step 3: Cross multiply
    79,119.46x = 109,185.48 × 43,309.78
  4. Step 4: Simplify right side
    79,119.46x = 4,728,799,117.99
  5. Step 5: Solve for x
    x = 4,728,799,117.99/79,119.46
  6. Step 6: Final answer
    x = 59,767.84

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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.