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Finding the Fourth Proportional to 79,682.26, 109,960.32 and 47,439.40

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Solution

The fourth proportional to 79,682.26, 109,960.32 and 47,439.40 is: 65,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,682.26 : 109,960.32 = 47,439.40 : x
  2. Step 2: Convert to fraction form
    79,682.26/109,960.32 = 47,439.40/x
  3. Step 3: Cross multiply
    79,682.26x = 109,960.32 × 47,439.40
  4. Step 4: Simplify right side
    79,682.26x = 5,216,451,604.61
  5. Step 5: Solve for x
    x = 5,216,451,604.61/79,682.26
  6. Step 6: Final answer
    x = 65,465.66

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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.