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Finding the Fourth Proportional to 67,993.60, 102,008.86 and 20,606.78

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Solution

The fourth proportional to 67,993.60, 102,008.86 and 20,606.78 is: 30,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,993.60 : 102,008.86 = 20,606.78 : x
  2. Step 2: Convert to fraction form
    67,993.60/102,008.86 = 20,606.78/x
  3. Step 3: Cross multiply
    67,993.60x = 102,008.86 × 20,606.78
  4. Step 4: Simplify right side
    67,993.60x = 2,102,074,136.07
  5. Step 5: Solve for x
    x = 2,102,074,136.07/67,993.60
  6. Step 6: Final answer
    x = 30,915.76

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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.