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Finding the Fourth Proportional to 71,401.80, 107,000.10 and 40,171.08

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Solution

The fourth proportional to 71,401.80, 107,000.10 and 40,171.08 is: 60,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,401.80 : 107,000.10 = 40,171.08 : x
  2. Step 2: Convert to fraction form
    71,401.80/107,000.10 = 40,171.08/x
  3. Step 3: Cross multiply
    71,401.80x = 107,000.10 × 40,171.08
  4. Step 4: Simplify right side
    71,401.80x = 4,298,309,577.11
  5. Step 5: Solve for x
    x = 4,298,309,577.11/71,401.80
  6. Step 6: Final answer
    x = 60,198.90

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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.