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Finding the Fourth Proportional to 72,635.68, 100,241.52 and 54,699.04

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Solution

The fourth proportional to 72,635.68, 100,241.52 and 54,699.04 is: 75,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,635.68 : 100,241.52 = 54,699.04 : x
  2. Step 2: Convert to fraction form
    72,635.68/100,241.52 = 54,699.04/x
  3. Step 3: Cross multiply
    72,635.68x = 100,241.52 × 54,699.04
  4. Step 4: Simplify right side
    72,635.68x = 5,483,114,912.14
  5. Step 5: Solve for x
    x = 5,483,114,912.14/72,635.68
  6. Step 6: Final answer
    x = 75,487.90

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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.