Home / 80,913.64-121,344.22-30,991.08

Finding the Fourth Proportional to 80,913.64, 121,344.22 and 30,991.08

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Solution

The fourth proportional to 80,913.64, 121,344.22 and 30,991.08 is: 46,476.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913.64 : 121,344.22 = 30,991.08 : x
  2. Step 2: Convert to fraction form
    80,913.64/121,344.22 = 30,991.08/x
  3. Step 3: Cross multiply
    80,913.64x = 121,344.22 × 30,991.08
  4. Step 4: Simplify right side
    80,913.64x = 3,760,588,429.56
  5. Step 5: Solve for x
    x = 3,760,588,429.56/80,913.64
  6. Step 6: Final answer
    x = 46,476.57

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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.