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Finding the Fourth Proportional to 72,241.50, 99,687.84 and 40,404.24

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Solution

The fourth proportional to 72,241.50, 99,687.84 and 40,404.24 is: 55,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,241.50 : 99,687.84 = 40,404.24 : x
  2. Step 2: Convert to fraction form
    72,241.50/99,687.84 = 40,404.24/x
  3. Step 3: Cross multiply
    72,241.50x = 99,687.84 × 40,404.24
  4. Step 4: Simplify right side
    72,241.50x = 4,027,811,412.44
  5. Step 5: Solve for x
    x = 4,027,811,412.44/72,241.50
  6. Step 6: Final answer
    x = 55,754.81

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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.