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Finding the Fourth Proportional to 72,481.23, 100,024.82 and 40,649.44

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Solution

The fourth proportional to 72,481.23, 100,024.82 and 40,649.44 is: 56,096.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,481.23 : 100,024.82 = 40,649.44 : x
  2. Step 2: Convert to fraction form
    72,481.23/100,024.82 = 40,649.44/x
  3. Step 3: Cross multiply
    72,481.23x = 100,024.82 × 40,649.44
  4. Step 4: Simplify right side
    72,481.23x = 4,065,952,919.10
  5. Step 5: Solve for x
    x = 4,065,952,919.10/72,481.23
  6. Step 6: Final answer
    x = 56,096.63

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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.