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Finding the Fourth Proportional to 117,694.71, 162,419.76 and 63,979.74

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Solution

The fourth proportional to 117,694.71, 162,419.76 and 63,979.74 is: 88,292.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,694.71 : 162,419.76 = 63,979.74 : x
  2. Step 2: Convert to fraction form
    117,694.71/162,419.76 = 63,979.74/x
  3. Step 3: Cross multiply
    117,694.71x = 162,419.76 × 63,979.74
  4. Step 4: Simplify right side
    117,694.71x = 10,391,574,015.66
  5. Step 5: Solve for x
    x = 10,391,574,015.66/117,694.71
  6. Step 6: Final answer
    x = 88,292.62

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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.