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Finding the Fourth Proportional to 83,578.79, 125,222.61 and 69,628.46

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Solution

The fourth proportional to 83,578.79, 125,222.61 and 69,628.46 is: 104,321.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,578.79 : 125,222.61 = 69,628.46 : x
  2. Step 2: Convert to fraction form
    83,578.79/125,222.61 = 69,628.46/x
  3. Step 3: Cross multiply
    83,578.79x = 125,222.61 × 69,628.46
  4. Step 4: Simplify right side
    83,578.79x = 8,719,057,439.19
  5. Step 5: Solve for x
    x = 8,719,057,439.19/83,578.79
  6. Step 6: Final answer
    x = 104,321.42

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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.