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Finding the Fourth Proportional to 83,323.87, 115,040.60 and 74,355.96

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Solution

The fourth proportional to 83,323.87, 115,040.60 and 74,355.96 is: 102,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,323.87 : 115,040.60 = 74,355.96 : x
  2. Step 2: Convert to fraction form
    83,323.87/115,040.60 = 74,355.96/x
  3. Step 3: Cross multiply
    83,323.87x = 115,040.60 × 74,355.96
  4. Step 4: Simplify right side
    83,323.87x = 8,553,953,304.99
  5. Step 5: Solve for x
    x = 8,553,953,304.99/83,323.87
  6. Step 6: Final answer
    x = 102,659.10

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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.