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Finding the Fourth Proportional to 67,286.80, 100,930.20 and 65,904.40

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Solution

The fourth proportional to 67,286.80, 100,930.20 and 65,904.40 is: 98,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,286.80 : 100,930.20 = 65,904.40 : x
  2. Step 2: Convert to fraction form
    67,286.80/100,930.20 = 65,904.40/x
  3. Step 3: Cross multiply
    67,286.80x = 100,930.20 × 65,904.40
  4. Step 4: Simplify right side
    67,286.80x = 6,651,744,272.88
  5. Step 5: Solve for x
    x = 6,651,744,272.88/67,286.80
  6. Step 6: Final answer
    x = 98,856.60

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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.