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Finding the Fourth Proportional to 71,982.88, 107,974.35 and 36,900.16

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Solution

The fourth proportional to 71,982.88, 107,974.35 and 36,900.16 is: 55,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,982.88 : 107,974.35 = 36,900.16 : x
  2. Step 2: Convert to fraction form
    71,982.88/107,974.35 = 36,900.16/x
  3. Step 3: Cross multiply
    71,982.88x = 107,974.35 × 36,900.16
  4. Step 4: Simplify right side
    71,982.88x = 3,984,270,520.96
  5. Step 5: Solve for x
    x = 3,984,270,520.96/71,982.88
  6. Step 6: Final answer
    x = 55,350.25

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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.