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Finding the Fourth Proportional to 71,392.66, 107,102.51 and 28,701.39

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Solution

The fourth proportional to 71,392.66, 107,102.51 and 28,701.39 is: 43,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,392.66 : 107,102.51 = 28,701.39 : x
  2. Step 2: Convert to fraction form
    71,392.66/107,102.51 = 28,701.39/x
  3. Step 3: Cross multiply
    71,392.66x = 107,102.51 × 28,701.39
  4. Step 4: Simplify right side
    71,392.66x = 3,073,990,909.49
  5. Step 5: Solve for x
    x = 3,073,990,909.49/71,392.66
  6. Step 6: Final answer
    x = 43,057.52

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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.