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Finding the Fourth Proportional to 40,797.87, 61,147.60 and 21,065.66

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Solution

The fourth proportional to 40,797.87, 61,147.60 and 21,065.66 is: 31,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,797.87 : 61,147.60 = 21,065.66 : x
  2. Step 2: Convert to fraction form
    40,797.87/61,147.60 = 21,065.66/x
  3. Step 3: Cross multiply
    40,797.87x = 61,147.60 × 21,065.66
  4. Step 4: Simplify right side
    40,797.87x = 1,288,114,651.62
  5. Step 5: Solve for x
    x = 1,288,114,651.62/40,797.87
  6. Step 6: Final answer
    x = 31,573.09

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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.