Home / 81,749.82-112,811.11-47,761.46

Finding the Fourth Proportional to 81,749.82, 112,811.11 and 47,761.46

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Solution

The fourth proportional to 81,749.82, 112,811.11 and 47,761.46 is: 65,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,749.82 : 112,811.11 = 47,761.46 : x
  2. Step 2: Convert to fraction form
    81,749.82/112,811.11 = 47,761.46/x
  3. Step 3: Cross multiply
    81,749.82x = 112,811.11 × 47,761.46
  4. Step 4: Simplify right side
    81,749.82x = 5,388,023,317.82
  5. Step 5: Solve for x
    x = 5,388,023,317.82/81,749.82
  6. Step 6: Final answer
    x = 65,908.69

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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.