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Finding the Fourth Proportional to 79,217.88, 109,310.28 and 47,375.16

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Solution

The fourth proportional to 79,217.88, 109,310.28 and 47,375.16 is: 65,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,217.88 : 109,310.28 = 47,375.16 : x
  2. Step 2: Convert to fraction form
    79,217.88/109,310.28 = 47,375.16/x
  3. Step 3: Cross multiply
    79,217.88x = 109,310.28 × 47,375.16
  4. Step 4: Simplify right side
    79,217.88x = 5,178,592,004.64
  5. Step 5: Solve for x
    x = 5,178,592,004.64/79,217.88
  6. Step 6: Final answer
    x = 65,371.50

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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.