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Finding the Fourth Proportional to 67,074.60, 100,676.70 and 40,830.60

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Solution

The fourth proportional to 67,074.60, 100,676.70 and 40,830.60 is: 61,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,074.60 : 100,676.70 = 40,830.60 : x
  2. Step 2: Convert to fraction form
    67,074.60/100,676.70 = 40,830.60/x
  3. Step 3: Cross multiply
    67,074.60x = 100,676.70 × 40,830.60
  4. Step 4: Simplify right side
    67,074.60x = 4,110,690,067.02
  5. Step 5: Solve for x
    x = 4,110,690,067.02/67,074.60
  6. Step 6: Final answer
    x = 61,285.35

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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.