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Finding the Fourth Proportional to 57,767.70, 86,651.55 and 54,311.70

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Solution

The fourth proportional to 57,767.70, 86,651.55 and 54,311.70 is: 81,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,767.70 : 86,651.55 = 54,311.70 : x
  2. Step 2: Convert to fraction form
    57,767.70/86,651.55 = 54,311.70/x
  3. Step 3: Cross multiply
    57,767.70x = 86,651.55 × 54,311.70
  4. Step 4: Simplify right side
    57,767.70x = 4,706,192,988.14
  5. Step 5: Solve for x
    x = 4,706,192,988.14/57,767.70
  6. Step 6: Final answer
    x = 81,467.55

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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.