Home / 81,217.44-121,700.28-56,305.92

Finding the Fourth Proportional to 81,217.44, 121,700.28 and 56,305.92

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Solution

The fourth proportional to 81,217.44, 121,700.28 and 56,305.92 is: 84,371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.44 : 121,700.28 = 56,305.92 : x
  2. Step 2: Convert to fraction form
    81,217.44/121,700.28 = 56,305.92/x
  3. Step 3: Cross multiply
    81,217.44x = 121,700.28 × 56,305.92
  4. Step 4: Simplify right side
    81,217.44x = 6,852,446,229.66
  5. Step 5: Solve for x
    x = 6,852,446,229.66/81,217.44
  6. Step 6: Final answer
    x = 84,371.61

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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.