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Finding the Fourth Proportional to 71,671.28, 107,467.43 and 34,240.78

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Solution

The fourth proportional to 71,671.28, 107,467.43 and 34,240.78 is: 51,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,671.28 : 107,467.43 = 34,240.78 : x
  2. Step 2: Convert to fraction form
    71,671.28/107,467.43 = 34,240.78/x
  3. Step 3: Cross multiply
    71,671.28x = 107,467.43 × 34,240.78
  4. Step 4: Simplify right side
    71,671.28x = 3,679,768,627.80
  5. Step 5: Solve for x
    x = 3,679,768,627.80/71,671.28
  6. Step 6: Final answer
    x = 51,342.30

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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.