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Finding the Fourth Proportional to 71,190.38, 98,191.68 and 43,965.87

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Solution

The fourth proportional to 71,190.38, 98,191.68 and 43,965.87 is: 60,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,190.38 : 98,191.68 = 43,965.87 : x
  2. Step 2: Convert to fraction form
    71,190.38/98,191.68 = 43,965.87/x
  3. Step 3: Cross multiply
    71,190.38x = 98,191.68 × 43,965.87
  4. Step 4: Simplify right side
    71,190.38x = 4,317,082,637.96
  5. Step 5: Solve for x
    x = 4,317,082,637.96/71,190.38
  6. Step 6: Final answer
    x = 60,641.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.