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Finding the Fourth Proportional to 79,213.92, 118,820.88 and 31,850.64

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Solution

The fourth proportional to 79,213.92, 118,820.88 and 31,850.64 is: 47,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.92 : 118,820.88 = 31,850.64 : x
  2. Step 2: Convert to fraction form
    79,213.92/118,820.88 = 31,850.64/x
  3. Step 3: Cross multiply
    79,213.92x = 118,820.88 × 31,850.64
  4. Step 4: Simplify right side
    79,213.92x = 3,784,521,073.36
  5. Step 5: Solve for x
    x = 3,784,521,073.36/79,213.92
  6. Step 6: Final answer
    x = 47,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.