Home / 80,619.14-120,859.32-35,606.36

Finding the Fourth Proportional to 80,619.14, 120,859.32 and 35,606.36

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Solution

The fourth proportional to 80,619.14, 120,859.32 and 35,606.36 is: 53,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,619.14 : 120,859.32 = 35,606.36 : x
  2. Step 2: Convert to fraction form
    80,619.14/120,859.32 = 35,606.36/x
  3. Step 3: Cross multiply
    80,619.14x = 120,859.32 × 35,606.36
  4. Step 4: Simplify right side
    80,619.14x = 4,303,360,457.28
  5. Step 5: Solve for x
    x = 4,303,360,457.28/80,619.14
  6. Step 6: Final answer
    x = 53,378.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.