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Finding the Fourth Proportional to 73,142.67, 109,759.90 and 28,768.21

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Solution

The fourth proportional to 73,142.67, 109,759.90 and 28,768.21 is: 43,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,142.67 : 109,759.90 = 28,768.21 : x
  2. Step 2: Convert to fraction form
    73,142.67/109,759.90 = 28,768.21/x
  3. Step 3: Cross multiply
    73,142.67x = 109,759.90 × 28,768.21
  4. Step 4: Simplify right side
    73,142.67x = 3,157,595,303.98
  5. Step 5: Solve for x
    x = 3,157,595,303.98/73,142.67
  6. Step 6: Final answer
    x = 43,170.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.