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Finding the Fourth Proportional to 79,243.56, 109,358.80 and 43,433.57

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Solution

The fourth proportional to 79,243.56, 109,358.80 and 43,433.57 is: 59,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,243.56 : 109,358.80 = 43,433.57 : x
  2. Step 2: Convert to fraction form
    79,243.56/109,358.80 = 43,433.57/x
  3. Step 3: Cross multiply
    79,243.56x = 109,358.80 × 43,433.57
  4. Step 4: Simplify right side
    79,243.56x = 4,749,843,259.73
  5. Step 5: Solve for x
    x = 4,749,843,259.73/79,243.56
  6. Step 6: Final answer
    x = 59,939.80

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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.