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Finding the Fourth Proportional to 79,472, 109,667.44 and 47,634.72

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Solution

The fourth proportional to 79,472, 109,667.44 and 47,634.72 is: 65,733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,472 : 109,667.44 = 47,634.72 : x
  2. Step 2: Convert to fraction form
    79,472/109,667.44 = 47,634.72/x
  3. Step 3: Cross multiply
    79,472x = 109,667.44 × 47,634.72
  4. Step 4: Simplify right side
    79,472x = 5,223,977,797.52
  5. Step 5: Solve for x
    x = 5,223,977,797.52/79,472
  6. Step 6: Final answer
    x = 65,733.56

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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.