Home / 81,481.26-112,459.95-53,137.74

Finding the Fourth Proportional to 81,481.26, 112,459.95 and 53,137.74

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Solution

The fourth proportional to 81,481.26, 112,459.95 and 53,137.74 is: 73,340.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,481.26 : 112,459.95 = 53,137.74 : x
  2. Step 2: Convert to fraction form
    81,481.26/112,459.95 = 53,137.74/x
  3. Step 3: Cross multiply
    81,481.26x = 112,459.95 × 53,137.74
  4. Step 4: Simplify right side
    81,481.26x = 5,975,867,583.51
  5. Step 5: Solve for x
    x = 5,975,867,583.51/81,481.26
  6. Step 6: Final answer
    x = 73,340.39

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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.