Home / 91,788.94-126,346.35-80,431.66

Finding the Fourth Proportional to 91,788.94, 126,346.35 and 80,431.66

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Solution

The fourth proportional to 91,788.94, 126,346.35 and 80,431.66 is: 110,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,788.94 : 126,346.35 = 80,431.66 : x
  2. Step 2: Convert to fraction form
    91,788.94/126,346.35 = 80,431.66/x
  3. Step 3: Cross multiply
    91,788.94x = 126,346.35 × 80,431.66
  4. Step 4: Simplify right side
    91,788.94x = 10,162,246,665.44
  5. Step 5: Solve for x
    x = 10,162,246,665.44/91,788.94
  6. Step 6: Final answer
    x = 110,713.19

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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.