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Finding the Fourth Proportional to 66,416.80, 99,625.20 and 27,002.20

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Solution

The fourth proportional to 66,416.80, 99,625.20 and 27,002.20 is: 40,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,416.80 : 99,625.20 = 27,002.20 : x
  2. Step 2: Convert to fraction form
    66,416.80/99,625.20 = 27,002.20/x
  3. Step 3: Cross multiply
    66,416.80x = 99,625.20 × 27,002.20
  4. Step 4: Simplify right side
    66,416.80x = 2,690,099,575.44
  5. Step 5: Solve for x
    x = 2,690,099,575.44/66,416.80
  6. Step 6: Final answer
    x = 40,503.30

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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.