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Finding the Fourth Proportional to 83,994.80, 125,943.60 and 31,409.60

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Solution

The fourth proportional to 83,994.80, 125,943.60 and 31,409.60 is: 47,096.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,994.80 : 125,943.60 = 31,409.60 : x
  2. Step 2: Convert to fraction form
    83,994.80/125,943.60 = 31,409.60/x
  3. Step 3: Cross multiply
    83,994.80x = 125,943.60 × 31,409.60
  4. Step 4: Simplify right side
    83,994.80x = 3,955,838,098.56
  5. Step 5: Solve for x
    x = 3,955,838,098.56/83,994.80
  6. Step 6: Final answer
    x = 47,096.23

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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.