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Finding the Fourth Proportional to 79,153, 109,231.14 and 43,825

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Solution

The fourth proportional to 79,153, 109,231.14 and 43,825 is: 60,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,153 : 109,231.14 = 43,825 : x
  2. Step 2: Convert to fraction form
    79,153/109,231.14 = 43,825/x
  3. Step 3: Cross multiply
    79,153x = 109,231.14 × 43,825
  4. Step 4: Simplify right side
    79,153x = 4,787,054,710.50
  5. Step 5: Solve for x
    x = 4,787,054,710.50/79,153
  6. Step 6: Final answer
    x = 60,478.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.