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Finding the Fourth Proportional to 79,076.80, 109,121.34 and 43,259.68

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Solution

The fourth proportional to 79,076.80, 109,121.34 and 43,259.68 is: 59,695.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,076.80 : 109,121.34 = 43,259.68 : x
  2. Step 2: Convert to fraction form
    79,076.80/109,121.34 = 43,259.68/x
  3. Step 3: Cross multiply
    79,076.80x = 109,121.34 × 43,259.68
  4. Step 4: Simplify right side
    79,076.80x = 4,720,554,249.57
  5. Step 5: Solve for x
    x = 4,720,554,249.57/79,076.80
  6. Step 6: Final answer
    x = 59,695.82

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1.5x scale

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.