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Finding the Fourth Proportional to 67,208.88, 100,806.12 and 20,462.16

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Solution

The fourth proportional to 67,208.88, 100,806.12 and 20,462.16 is: 30,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.88 : 100,806.12 = 20,462.16 : x
  2. Step 2: Convert to fraction form
    67,208.88/100,806.12 = 20,462.16/x
  3. Step 3: Cross multiply
    67,208.88x = 100,806.12 × 20,462.16
  4. Step 4: Simplify right side
    67,208.88x = 2,062,710,956.42
  5. Step 5: Solve for x
    x = 2,062,710,956.42/67,208.88
  6. Step 6: Final answer
    x = 30,691.05

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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.