Home / 81,515.37-112,489.77-45,705.27

Finding the Fourth Proportional to 81,515.37, 112,489.77 and 45,705.27

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Solution

The fourth proportional to 81,515.37, 112,489.77 and 45,705.27 is: 63,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.37 : 112,489.77 = 45,705.27 : x
  2. Step 2: Convert to fraction form
    81,515.37/112,489.77 = 45,705.27/x
  3. Step 3: Cross multiply
    81,515.37x = 112,489.77 × 45,705.27
  4. Step 4: Simplify right side
    81,515.37x = 5,141,375,310.09
  5. Step 5: Solve for x
    x = 5,141,375,310.09/81,515.37
  6. Step 6: Final answer
    x = 63,072.46

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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.