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Finding the Fourth Proportional to 81,329.97, 112,221.96 and 51,093.89

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Solution

The fourth proportional to 81,329.97, 112,221.96 and 51,093.89 is: 70,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,329.97 : 112,221.96 = 51,093.89 : x
  2. Step 2: Convert to fraction form
    81,329.97/112,221.96 = 51,093.89/x
  3. Step 3: Cross multiply
    81,329.97x = 112,221.96 × 51,093.89
  4. Step 4: Simplify right side
    81,329.97x = 5,733,855,918.71
  5. Step 5: Solve for x
    x = 5,733,855,918.71/81,329.97
  6. Step 6: Final answer
    x = 70,501.14

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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.