Home / 80,917.94-121,376.91-53,209.46

Finding the Fourth Proportional to 80,917.94, 121,376.91 and 53,209.46

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Solution

The fourth proportional to 80,917.94, 121,376.91 and 53,209.46 is: 79,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,917.94 : 121,376.91 = 53,209.46 : x
  2. Step 2: Convert to fraction form
    80,917.94/121,376.91 = 53,209.46/x
  3. Step 3: Cross multiply
    80,917.94x = 121,376.91 × 53,209.46
  4. Step 4: Simplify right side
    80,917.94x = 6,458,399,837.57
  5. Step 5: Solve for x
    x = 6,458,399,837.57/80,917.94
  6. Step 6: Final answer
    x = 79,814.19

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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.