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Finding the Fourth Proportional to 97,969.56, 135,008.40 and 66,083.04

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Solution

The fourth proportional to 97,969.56, 135,008.40 and 66,083.04 is: 91,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,969.56 : 135,008.40 = 66,083.04 : x
  2. Step 2: Convert to fraction form
    97,969.56/135,008.40 = 66,083.04/x
  3. Step 3: Cross multiply
    97,969.56x = 135,008.40 × 66,083.04
  4. Step 4: Simplify right side
    97,969.56x = 8,921,765,497.54
  5. Step 5: Solve for x
    x = 8,921,765,497.54/97,969.56
  6. Step 6: Final answer
    x = 91,066.71

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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.