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Finding the Fourth Proportional to 84,468.40, 115,945.38 and 74,694.04

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Solution

The fourth proportional to 84,468.40, 115,945.38 and 74,694.04 is: 102,528.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,468.40 : 115,945.38 = 74,694.04 : x
  2. Step 2: Convert to fraction form
    84,468.40/115,945.38 = 74,694.04/x
  3. Step 3: Cross multiply
    84,468.40x = 115,945.38 × 74,694.04
  4. Step 4: Simplify right side
    84,468.40x = 8,660,428,851.54
  5. Step 5: Solve for x
    x = 8,660,428,851.54/84,468.40
  6. Step 6: Final answer
    x = 102,528.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.