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Finding the Fourth Proportional to 71,076.97, 106,614.91 and 28,947.14

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Solution

The fourth proportional to 71,076.97, 106,614.91 and 28,947.14 is: 43,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,076.97 : 106,614.91 = 28,947.14 : x
  2. Step 2: Convert to fraction form
    71,076.97/106,614.91 = 28,947.14/x
  3. Step 3: Cross multiply
    71,076.97x = 106,614.91 × 28,947.14
  4. Step 4: Simplify right side
    71,076.97x = 3,086,196,725.86
  5. Step 5: Solve for x
    x = 3,086,196,725.86/71,076.97
  6. Step 6: Final answer
    x = 43,420.49

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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.