Home / 80,760.29-121,141.45-28,169.77

Finding the Fourth Proportional to 80,760.29, 121,141.45 and 28,169.77

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Solution

The fourth proportional to 80,760.29, 121,141.45 and 28,169.77 is: 42,255.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,760.29 : 121,141.45 = 28,169.77 : x
  2. Step 2: Convert to fraction form
    80,760.29/121,141.45 = 28,169.77/x
  3. Step 3: Cross multiply
    80,760.29x = 121,141.45 × 28,169.77
  4. Step 4: Simplify right side
    80,760.29x = 3,412,526,410.69
  5. Step 5: Solve for x
    x = 3,412,526,410.69/80,760.29
  6. Step 6: Final answer
    x = 42,255.01

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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.