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Finding the Fourth Proportional to 94,162, 129,943.56 and 51,721.24

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Solution

The fourth proportional to 94,162, 129,943.56 and 51,721.24 is: 71,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,162 : 129,943.56 = 51,721.24 : x
  2. Step 2: Convert to fraction form
    94,162/129,943.56 = 51,721.24/x
  3. Step 3: Cross multiply
    94,162x = 129,943.56 × 51,721.24
  4. Step 4: Simplify right side
    94,162x = 6,720,842,053.21
  5. Step 5: Solve for x
    x = 6,720,842,053.21/94,162
  6. Step 6: Final answer
    x = 71,375.31

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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.