Home / 79,619.56-109,879.64-45,638.57

Finding the Fourth Proportional to 79,619.56, 109,879.64 and 45,638.57

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Solution

The fourth proportional to 79,619.56, 109,879.64 and 45,638.57 is: 62,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,619.56 : 109,879.64 = 45,638.57 : x
  2. Step 2: Convert to fraction form
    79,619.56/109,879.64 = 45,638.57/x
  3. Step 3: Cross multiply
    79,619.56x = 109,879.64 × 45,638.57
  4. Step 4: Simplify right side
    79,619.56x = 5,014,749,859.37
  5. Step 5: Solve for x
    x = 5,014,749,859.37/79,619.56
  6. Step 6: Final answer
    x = 62,983.90

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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.