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Finding the Fourth Proportional to 79,480.80, 109,693.04 and 47,667.20

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Solution

The fourth proportional to 79,480.80, 109,693.04 and 47,667.20 is: 65,786.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,480.80 : 109,693.04 = 47,667.20 : x
  2. Step 2: Convert to fraction form
    79,480.80/109,693.04 = 47,667.20/x
  3. Step 3: Cross multiply
    79,480.80x = 109,693.04 × 47,667.20
  4. Step 4: Simplify right side
    79,480.80x = 5,228,760,076.29
  5. Step 5: Solve for x
    x = 5,228,760,076.29/79,480.80
  6. Step 6: Final answer
    x = 65,786.46

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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.