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Finding the Fourth Proportional to 72,283.70, 99,753.46 and 40,453.54

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Solution

The fourth proportional to 72,283.70, 99,753.46 and 40,453.54 is: 55,826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,283.70 : 99,753.46 = 40,453.54 : x
  2. Step 2: Convert to fraction form
    72,283.70/99,753.46 = 40,453.54/x
  3. Step 3: Cross multiply
    72,283.70x = 99,753.46 × 40,453.54
  4. Step 4: Simplify right side
    72,283.70x = 4,035,380,584.25
  5. Step 5: Solve for x
    x = 4,035,380,584.25/72,283.70
  6. Step 6: Final answer
    x = 55,826.98

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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.