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Finding the Fourth Proportional to 70,969.53, 106,454.31 and 28,872.52

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Solution

The fourth proportional to 70,969.53, 106,454.31 and 28,872.52 is: 43,308.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969.53 : 106,454.31 = 28,872.52 : x
  2. Step 2: Convert to fraction form
    70,969.53/106,454.31 = 28,872.52/x
  3. Step 3: Cross multiply
    70,969.53x = 106,454.31 × 28,872.52
  4. Step 4: Simplify right side
    70,969.53x = 3,073,604,194.56
  5. Step 5: Solve for x
    x = 3,073,604,194.56/70,969.53
  6. Step 6: Final answer
    x = 43,308.79

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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.