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Finding the Fourth Proportional to 79,579.82, 109,783.23 and 47,693.36

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Solution

The fourth proportional to 79,579.82, 109,783.23 and 47,693.36 is: 65,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.82 : 109,783.23 = 47,693.36 : x
  2. Step 2: Convert to fraction form
    79,579.82/109,783.23 = 47,693.36/x
  3. Step 3: Cross multiply
    79,579.82x = 109,783.23 × 47,693.36
  4. Step 4: Simplify right side
    79,579.82x = 5,235,931,110.35
  5. Step 5: Solve for x
    x = 5,235,931,110.35/79,579.82
  6. Step 6: Final answer
    x = 65,794.71

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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.