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Finding the Fourth Proportional to 79,660.61, 109,918.76 and 45,662.84

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Solution

The fourth proportional to 79,660.61, 109,918.76 and 45,662.84 is: 63,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.61 : 109,918.76 = 45,662.84 : x
  2. Step 2: Convert to fraction form
    79,660.61/109,918.76 = 45,662.84/x
  3. Step 3: Cross multiply
    79,660.61x = 109,918.76 × 45,662.84
  4. Step 4: Simplify right side
    79,660.61x = 5,019,201,972.97
  5. Step 5: Solve for x
    x = 5,019,201,972.97/79,660.61
  6. Step 6: Final answer
    x = 63,007.33

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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.