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Finding the Fourth Proportional to 70,251.69, 105,419.03 and 25,909.41

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Solution

The fourth proportional to 70,251.69, 105,419.03 and 25,909.41 is: 38,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,251.69 : 105,419.03 = 25,909.41 : x
  2. Step 2: Convert to fraction form
    70,251.69/105,419.03 = 25,909.41/x
  3. Step 3: Cross multiply
    70,251.69x = 105,419.03 × 25,909.41
  4. Step 4: Simplify right side
    70,251.69x = 2,731,344,740.53
  5. Step 5: Solve for x
    x = 2,731,344,740.53/70,251.69
  6. Step 6: Final answer
    x = 38,879.42

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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.