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Finding the Fourth Proportional to 66,129.48, 91,258.56 and 35,914.68

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Solution

The fourth proportional to 66,129.48, 91,258.56 and 35,914.68 is: 49,562.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129.48 : 91,258.56 = 35,914.68 : x
  2. Step 2: Convert to fraction form
    66,129.48/91,258.56 = 35,914.68/x
  3. Step 3: Cross multiply
    66,129.48x = 91,258.56 × 35,914.68
  4. Step 4: Simplify right side
    66,129.48x = 3,277,521,979.66
  5. Step 5: Solve for x
    x = 3,277,521,979.66/66,129.48
  6. Step 6: Final answer
    x = 49,562.19

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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.