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Finding the Fourth Proportional to 79,529.36, 109,751.88 and 43,720.88

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Solution

The fourth proportional to 79,529.36, 109,751.88 and 43,720.88 is: 60,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,529.36 : 109,751.88 = 43,720.88 : x
  2. Step 2: Convert to fraction form
    79,529.36/109,751.88 = 43,720.88/x
  3. Step 3: Cross multiply
    79,529.36x = 109,751.88 × 43,720.88
  4. Step 4: Simplify right side
    79,529.36x = 4,798,448,775.25
  5. Step 5: Solve for x
    x = 4,798,448,775.25/79,529.36
  6. Step 6: Final answer
    x = 60,335.56

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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.