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Finding the Fourth Proportional to 116,987.52, 161,435.52 and 66,008.28

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Solution

The fourth proportional to 116,987.52, 161,435.52 and 66,008.28 is: 91,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,987.52 : 161,435.52 = 66,008.28 : x
  2. Step 2: Convert to fraction form
    116,987.52/161,435.52 = 66,008.28/x
  3. Step 3: Cross multiply
    116,987.52x = 161,435.52 × 66,008.28
  4. Step 4: Simplify right side
    116,987.52x = 10,656,081,006.11
  5. Step 5: Solve for x
    x = 10,656,081,006.11/116,987.52
  6. Step 6: Final answer
    x = 91,087.33

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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.