Home / 84,743.20-116,679.76-71,969.76

Finding the Fourth Proportional to 84,743.20, 116,679.76 and 71,969.76

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Solution

The fourth proportional to 84,743.20, 116,679.76 and 71,969.76 is: 99,092.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.20 : 116,679.76 = 71,969.76 : x
  2. Step 2: Convert to fraction form
    84,743.20/116,679.76 = 71,969.76/x
  3. Step 3: Cross multiply
    84,743.20x = 116,679.76 × 71,969.76
  4. Step 4: Simplify right side
    84,743.20x = 8,397,414,324.06
  5. Step 5: Solve for x
    x = 8,397,414,324.06/84,743.20
  6. Step 6: Final answer
    x = 99,092.49

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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.