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Finding the Fourth Proportional to 72,757.44, 100,393.92 and 45,914.76

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Solution

The fourth proportional to 72,757.44, 100,393.92 and 45,914.76 is: 63,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,757.44 : 100,393.92 = 45,914.76 : x
  2. Step 2: Convert to fraction form
    72,757.44/100,393.92 = 45,914.76/x
  3. Step 3: Cross multiply
    72,757.44x = 100,393.92 × 45,914.76
  4. Step 4: Simplify right side
    72,757.44x = 4,609,562,742.26
  5. Step 5: Solve for x
    x = 4,609,562,742.26/72,757.44
  6. Step 6: Final answer
    x = 63,355.21

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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.