Home / 80,716.62-111,272.30-53,447.07

Finding the Fourth Proportional to 80,716.62, 111,272.30 and 53,447.07

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Solution

The fourth proportional to 80,716.62, 111,272.30 and 53,447.07 is: 73,679.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,716.62 : 111,272.30 = 53,447.07 : x
  2. Step 2: Convert to fraction form
    80,716.62/111,272.30 = 53,447.07/x
  3. Step 3: Cross multiply
    80,716.62x = 111,272.30 × 53,447.07
  4. Step 4: Simplify right side
    80,716.62x = 5,947,178,139.93
  5. Step 5: Solve for x
    x = 5,947,178,139.93/80,716.62
  6. Step 6: Final answer
    x = 73,679.72

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1.5x scale

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.