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Finding the Fourth Proportional to 71,630.88, 107,467.79 and 28,914.32

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Solution

The fourth proportional to 71,630.88, 107,467.79 and 28,914.32 is: 43,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,630.88 : 107,467.79 = 28,914.32 : x
  2. Step 2: Convert to fraction form
    71,630.88/107,467.79 = 28,914.32/x
  3. Step 3: Cross multiply
    71,630.88x = 107,467.79 × 28,914.32
  4. Step 4: Simplify right side
    71,630.88x = 3,107,358,069.75
  5. Step 5: Solve for x
    x = 3,107,358,069.75/71,630.88
  6. Step 6: Final answer
    x = 43,380.15

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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.