Home / 81,971.82-113,126.91-45,675.68

Finding the Fourth Proportional to 81,971.82, 113,126.91 and 45,675.68

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Solution

The fourth proportional to 81,971.82, 113,126.91 and 45,675.68 is: 63,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,971.82 : 113,126.91 = 45,675.68 : x
  2. Step 2: Convert to fraction form
    81,971.82/113,126.91 = 45,675.68/x
  3. Step 3: Cross multiply
    81,971.82x = 113,126.91 × 45,675.68
  4. Step 4: Simplify right side
    81,971.82x = 5,167,148,143.54
  5. Step 5: Solve for x
    x = 5,167,148,143.54/81,971.82
  6. Step 6: Final answer
    x = 63,035.66

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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.