Home / 79,617.09-109,871.46-47,786.13

Finding the Fourth Proportional to 79,617.09, 109,871.46 and 47,786.13

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Solution

The fourth proportional to 79,617.09, 109,871.46 and 47,786.13 is: 65,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,617.09 : 109,871.46 = 47,786.13 : x
  2. Step 2: Convert to fraction form
    79,617.09/109,871.46 = 47,786.13/x
  3. Step 3: Cross multiply
    79,617.09x = 109,871.46 × 47,786.13
  4. Step 4: Simplify right side
    79,617.09x = 5,250,331,870.85
  5. Step 5: Solve for x
    x = 5,250,331,870.85/79,617.09
  6. Step 6: Final answer
    x = 65,944.78

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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.