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Finding the Fourth Proportional to 79,507.98, 109,721.25 and 43,701.66

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Solution

The fourth proportional to 79,507.98, 109,721.25 and 43,701.66 is: 60,308.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,507.98 : 109,721.25 = 43,701.66 : x
  2. Step 2: Convert to fraction form
    79,507.98/109,721.25 = 43,701.66/x
  3. Step 3: Cross multiply
    79,507.98x = 109,721.25 × 43,701.66
  4. Step 4: Simplify right side
    79,507.98x = 4,795,000,762.28
  5. Step 5: Solve for x
    x = 4,795,000,762.28/79,507.98
  6. Step 6: Final answer
    x = 60,308.42

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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.