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Finding the Fourth Proportional to 83,602.67, 125,405.94 and 20,423.33

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Solution

The fourth proportional to 83,602.67, 125,405.94 and 20,423.33 is: 30,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,602.67 : 125,405.94 = 20,423.33 : x
  2. Step 2: Convert to fraction form
    83,602.67/125,405.94 = 20,423.33/x
  3. Step 3: Cross multiply
    83,602.67x = 125,405.94 × 20,423.33
  4. Step 4: Simplify right side
    83,602.67x = 2,561,206,269.55
  5. Step 5: Solve for x
    x = 2,561,206,269.55/83,602.67
  6. Step 6: Final answer
    x = 30,635.46

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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.