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Finding the Fourth Proportional to 84,656.71, 116,802.61 and 66,695.97

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Solution

The fourth proportional to 84,656.71, 116,802.61 and 66,695.97 is: 92,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,656.71 : 116,802.61 = 66,695.97 : x
  2. Step 2: Convert to fraction form
    84,656.71/116,802.61 = 66,695.97/x
  3. Step 3: Cross multiply
    84,656.71x = 116,802.61 × 66,695.97
  4. Step 4: Simplify right side
    84,656.71x = 7,790,263,372.48
  5. Step 5: Solve for x
    x = 7,790,263,372.48/84,656.71
  6. Step 6: Final answer
    x = 92,021.81

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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.