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Finding the Fourth Proportional to 73,132.98, 109,720.12 and 20,542.92

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Solution

The fourth proportional to 73,132.98, 109,720.12 and 20,542.92 is: 30,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,132.98 : 109,720.12 = 20,542.92 : x
  2. Step 2: Convert to fraction form
    73,132.98/109,720.12 = 20,542.92/x
  3. Step 3: Cross multiply
    73,132.98x = 109,720.12 × 20,542.92
  4. Step 4: Simplify right side
    73,132.98x = 2,253,971,647.55
  5. Step 5: Solve for x
    x = 2,253,971,647.55/73,132.98
  6. Step 6: Final answer
    x = 30,820.18

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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.