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Finding the Fourth Proportional to 71,999.98, 99,360.03 and 40,168.88

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Solution

The fourth proportional to 71,999.98, 99,360.03 and 40,168.88 is: 55,433.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.98 : 99,360.03 = 40,168.88 : x
  2. Step 2: Convert to fraction form
    71,999.98/99,360.03 = 40,168.88/x
  3. Step 3: Cross multiply
    71,999.98x = 99,360.03 × 40,168.88
  4. Step 4: Simplify right side
    71,999.98x = 3,991,181,121.87
  5. Step 5: Solve for x
    x = 3,991,181,121.87/71,999.98
  6. Step 6: Final answer
    x = 55,433.09

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1.5x scale

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.