Home / 81,717.82-112,767.98-45,419.09

Finding the Fourth Proportional to 81,717.82, 112,767.98 and 45,419.09

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Solution

The fourth proportional to 81,717.82, 112,767.98 and 45,419.09 is: 62,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.82 : 112,767.98 = 45,419.09 : x
  2. Step 2: Convert to fraction form
    81,717.82/112,767.98 = 45,419.09/x
  3. Step 3: Cross multiply
    81,717.82x = 112,767.98 × 45,419.09
  4. Step 4: Simplify right side
    81,717.82x = 5,121,819,032.74
  5. Step 5: Solve for x
    x = 5,121,819,032.74/81,717.82
  6. Step 6: Final answer
    x = 62,676.89

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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.