Home / 80,917.52-121,292.06-45,326.66

Finding the Fourth Proportional to 80,917.52, 121,292.06 and 45,326.66

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Solution

The fourth proportional to 80,917.52, 121,292.06 and 45,326.66 is: 67,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,917.52 : 121,292.06 = 45,326.66 : x
  2. Step 2: Convert to fraction form
    80,917.52/121,292.06 = 45,326.66/x
  3. Step 3: Cross multiply
    80,917.52x = 121,292.06 × 45,326.66
  4. Step 4: Simplify right side
    80,917.52x = 5,497,763,131.23
  5. Step 5: Solve for x
    x = 5,497,763,131.23/80,917.52
  6. Step 6: Final answer
    x = 67,942.81

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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.