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Finding the Fourth Proportional to 71,125.92, 98,080.11 and 61,087.56

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Solution

The fourth proportional to 71,125.92, 98,080.11 and 61,087.56 is: 84,237.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,125.92 : 98,080.11 = 61,087.56 : x
  2. Step 2: Convert to fraction form
    71,125.92/98,080.11 = 61,087.56/x
  3. Step 3: Cross multiply
    71,125.92x = 98,080.11 × 61,087.56
  4. Step 4: Simplify right side
    71,125.92x = 5,991,474,604.43
  5. Step 5: Solve for x
    x = 5,991,474,604.43/71,125.92
  6. Step 6: Final answer
    x = 84,237.57

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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.